diff options
Diffstat (limited to 'docs/configuration')
| -rw-r--r-- | docs/configuration/firewall/general-legacy.rst | 1051 | ||||
| -rw-r--r-- | docs/configuration/firewall/general.rst | 1624 | ||||
| -rw-r--r-- | docs/configuration/firewall/index.rst | 14 | ||||
| -rw-r--r-- | docs/configuration/firewall/zone.rst | 4 |
4 files changed, 2110 insertions, 583 deletions
diff --git a/docs/configuration/firewall/general-legacy.rst b/docs/configuration/firewall/general-legacy.rst new file mode 100644 index 00000000..de91e54b --- /dev/null +++ b/docs/configuration/firewall/general-legacy.rst @@ -0,0 +1,1051 @@ +:lastproofread: 2021-06-29 + +.. _firewall: + +############### +Firewall-Legacy +############### + +.. note:: **Important note:** + This documentation is valid only for VyOS Sagitta prior to + 1.4-rolling-YYYYMMDDHHmm + +******** +Overview +******** + +VyOS makes use of Linux `netfilter <https://netfilter.org/>`_ for packet +filtering. + +The firewall supports the creation of groups for ports, addresses, and +networks (implemented using netfilter ipset) and the option of interface +or zone based firewall policy. + +.. note:: **Important note on usage of terms:** + The firewall makes use of the terms `in`, `out`, and `local` + for firewall policy. Users experienced with netfilter often confuse + `in` to be a reference to the `INPUT` chain, and `out` the `OUTPUT` + chain from netfilter. This is not the case. These instead indicate + the use of the `FORWARD` chain and either the input or output + interface. The `INPUT` chain, which is used for local traffic to the + OS, is a reference to as `local` with respect to its input interface. + + +*************** +Global settings +*************** + +Some firewall settings are global and have an affect on the whole system. + +.. cfgcmd:: set firewall all-ping [enable | disable] + + By default, when VyOS receives an ICMP echo request packet destined for + itself, it will answer with an ICMP echo reply, unless you avoid it + through its firewall. + + With the firewall you can set rules to accept, drop or reject ICMP in, + out or local traffic. You can also use the general **firewall all-ping** + command. This command affects only to LOCAL (packets destined for your + VyOS system), not to IN or OUT traffic. + + .. note:: **firewall all-ping** affects only to LOCAL and it always + behaves in the most restrictive way + + .. code-block:: none + + set firewall all-ping enable + + When the command above is set, VyOS will answer every ICMP echo request + addressed to itself, but that will only happen if no other rule is + applied dropping or rejecting local echo requests. In case of conflict, + VyOS will not answer ICMP echo requests. + + .. code-block:: none + + set firewall all-ping disable + + When the command above is set, VyOS will answer no ICMP echo request + addressed to itself at all, no matter where it comes from or whether + more specific rules are being applied to accept them. + +.. cfgcmd:: set firewall broadcast-ping [enable | disable] + + This setting enable or disable the response of icmp broadcast + messages. The following system parameter will be altered: + + * ``net.ipv4.icmp_echo_ignore_broadcasts`` + +.. cfgcmd:: set firewall ip-src-route [enable | disable] +.. cfgcmd:: set firewall ipv6-src-route [enable | disable] + + This setting handle if VyOS accept packets with a source route + option. The following system parameter will be altered: + + * ``net.ipv4.conf.all.accept_source_route`` + * ``net.ipv6.conf.all.accept_source_route`` + +.. cfgcmd:: set firewall receive-redirects [enable | disable] +.. cfgcmd:: set firewall ipv6-receive-redirects [enable | disable] + + enable or disable of ICMPv4 or ICMPv6 redirect messages accepted + by VyOS. The following system parameter will be altered: + + * ``net.ipv4.conf.all.accept_redirects`` + * ``net.ipv6.conf.all.accept_redirects`` + +.. cfgcmd:: set firewall send-redirects [enable | disable] + + enable or disable ICMPv4 redirect messages send by VyOS + The following system parameter will be altered: + + * ``net.ipv4.conf.all.send_redirects`` + +.. cfgcmd:: set firewall log-martians [enable | disable] + + enable or disable the logging of martian IPv4 packets. + The following system parameter will be altered: + + * ``net.ipv4.conf.all.log_martians`` + +.. cfgcmd:: set firewall source-validation [strict | loose | disable] + + Set the IPv4 source validation mode. + The following system parameter will be altered: + + * ``net.ipv4.conf.all.rp_filter`` + +.. cfgcmd:: set firewall syn-cookies [enable | disable] + + Enable or Disable if VyOS use IPv4 TCP SYN Cookies. + The following system parameter will be altered: + + * ``net.ipv4.tcp_syncookies`` + +.. cfgcmd:: set firewall twa-hazards-protection [enable | disable] + + Enable or Disable VyOS to be :rfc:`1337` conform. + The following system parameter will be altered: + + * ``net.ipv4.tcp_rfc1337`` + +.. cfgcmd:: set firewall state-policy established action [accept | drop | + reject] + +.. cfgcmd:: set firewall state-policy established log enable + + Set the global setting for an established connection. + +.. cfgcmd:: set firewall state-policy invalid action [accept | drop | reject] + +.. cfgcmd:: set firewall state-policy invalid log enable + + Set the global setting for invalid packets. + +.. cfgcmd:: set firewall state-policy related action [accept | drop | reject] + +.. cfgcmd:: set firewall state-policy related log enable + + Set the global setting for related connections. + + +****** +Groups +****** + +Firewall groups represent collections of IP addresses, networks, ports, +mac addresses or domains. Once created, a group can be referenced by +firewall, nat and policy route rules as either a source or destination +matcher. Members can be added or removed from a group without changes to, +or the need to reload, individual firewall rules. + +Groups need to have unique names. Even though some contain IPv4 +addresses and others contain IPv6 addresses, they still need to have +unique names, so you may want to append "-v4" or "-v6" to your group +names. + + +Address Groups +============== + +In an **address group** a single IP address or IP address ranges are +defined. + +.. cfgcmd:: set firewall group address-group <name> address [address | + address range] +.. cfgcmd:: set firewall group ipv6-address-group <name> address <address> + + Define a IPv4 or a IPv6 address group + + .. code-block:: none + + set firewall group address-group ADR-INSIDE-v4 address 192.168.0.1 + set firewall group address-group ADR-INSIDE-v4 address 10.0.0.1-10.0.0.8 + set firewall group ipv6-address-group ADR-INSIDE-v6 address 2001:db8::1 + +.. cfgcmd:: set firewall group address-group <name> description <text> +.. cfgcmd:: set firewall group ipv6-address-group <name> description <text> + + Provide a IPv4 or IPv6 address group description + +Network Groups +============== + +While **network groups** accept IP networks in CIDR notation, specific +IP addresses can be added as a 32-bit prefix. If you foresee the need +to add a mix of addresses and networks, the network group is +recommended. + +.. cfgcmd:: set firewall group network-group <name> network <CIDR> +.. cfgcmd:: set firewall group ipv6-network-group <name> network <CIDR> + + Define a IPv4 or IPv6 Network group. + + .. code-block:: none + + set firewall group network-group NET-INSIDE-v4 network 192.168.0.0/24 + set firewall group network-group NET-INSIDE-v4 network 192.168.1.0/24 + set firewall group ipv6-network-group NET-INSIDE-v6 network 2001:db8::/64 + +.. cfgcmd:: set firewall group network-group <name> description <text> +.. cfgcmd:: set firewall group ipv6-network-group <name> description <text> + + Provide a IPv4 or IPv6 network group description. + +Port Groups +=========== + +A **port group** represents only port numbers, not the protocol. Port +groups can be referenced for either TCP or UDP. It is recommended that +TCP and UDP groups are created separately to avoid accidentally +filtering unnecessary ports. Ranges of ports can be specified by using +`-`. + +.. cfgcmd:: set firewall group port-group <name> port + [portname | portnumber | startport-endport] + + Define a port group. A port name can be any name defined in + /etc/services. e.g.: http + + .. code-block:: none + + set firewall group port-group PORT-TCP-SERVER1 port http + set firewall group port-group PORT-TCP-SERVER1 port 443 + set firewall group port-group PORT-TCP-SERVER1 port 5000-5010 + +.. cfgcmd:: set firewall group port-group <name> description <text> + + Provide a port group description. + +MAC Groups +========== + +A **mac group** represents a collection of mac addresses. + +.. cfgcmd:: set firewall group mac-group <name> mac-address <mac-address> + + Define a mac group. + +.. code-block:: none + + set firewall group mac-group MAC-G01 mac-address 88:a4:c2:15:b6:4f + set firewall group mac-group MAC-G01 mac-address 4c:d5:77:c0:19:81 + + +Domain Groups +============= + +A **domain group** represents a collection of domains. + +.. cfgcmd:: set firewall group domain-group <name> address <domain> + + Define a domain group. + +.. code-block:: none + + set firewall group domain-group DOM address example.com + + +********* +Rule-Sets +********* + +A rule-set is a named collection of firewall rules that can be applied +to an interface or a zone. Each rule is numbered, has an action to apply +if the rule is matched, and the ability to specify the criteria to +match. Data packets go through the rules from 1 - 999999, at the first match +the action of the rule will be executed. + +.. cfgcmd:: set firewall name <name> description <text> +.. cfgcmd:: set firewall ipv6-name <name> description <text> + + Provide a rule-set description. + +.. cfgcmd:: set firewall name <name> default-action [accept | drop | jump | + reject | return] +.. cfgcmd:: set firewall ipv6-name <name> default-action [accept | drop | + jump | reject | return] + + This set the default action of the rule-set if no rule matched a packet + criteria. If defacult-action is set to ``jump``, then + ``default-jump-target`` is also needed. + +.. cfgcmd:: set firewall name <name> default-jump-target <text> +.. cfgcmd:: set firewall ipv6-name <name> default-jump-target <text> + + To be used only when ``defult-action`` is set to ``jump``. Use this + command to specify jump target for default rule. + +.. cfgcmd:: set firewall name <name> enable-default-log +.. cfgcmd:: set firewall ipv6-name <name> enable-default-log + + Use this command to enable the logging of the default action. + +.. cfgcmd:: set firewall name <name> rule <1-999999> action [accept | drop | + jump | queue | reject | return] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> action [accept | + drop | jump | queue | reject | return] + + This required setting defines the action of the current rule. If action + is set to ``jump``, then ``jump-target`` is also needed. + +.. cfgcmd:: set firewall name <name> rule <1-999999> jump-target <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> jump-target <text> + + To be used only when ``action`` is set to ``jump``. Use this + command to specify jump target. + +.. cfgcmd:: set firewall name <name> rule <1-999999> queue <0-65535> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> queue <0-65535> + + Use this command to set the target to use. Action queue must be defined + to use this setting + +.. cfgcmd:: set firewall name <name> rule <1-999999> queue-options + <bypass-fanout> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> queue-options + <bypass-fanout> + + Options used for queue target. Action queue must be defined to use this + setting + +.. cfgcmd:: set firewall name <name> rule <1-999999> description <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> description <text> + + Provide a description for each rule. + +.. cfgcmd:: set firewall name <name> rule <1-999999> log [disable | enable] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log [disable | + enable] + + Enable or disable logging for the matched packet. + +.. cfgcmd:: set firewall name <name> rule <1-999999> log-options level + [emerg | alert | crit | err | warn | notice | info | debug] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options level + [emerg | alert | crit | err | warn | notice | info | debug] + + Define log-level. Only applicable if rule log is enable. + +.. cfgcmd:: set firewall name <name> rule <1-999999> log-options group + <0-65535> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options group + <0-65535> + + Define log group to send message to. Only applicable if rule log is enable. + +.. cfgcmd:: set firewall name <name> rule <1-999999> log-options snaplen + <0-9000> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options snaplen + <0-9000> + + Define length of packet payload to include in netlink message. Only + applicable if rule log is enable and log group is defined. + +.. cfgcmd:: set firewall name <name> rule <1-999999> log-options + queue-threshold <0-65535> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options + queue-threshold <0-65535> + + Define number of packets to queue inside the kernel before sending them to + userspace. Only applicable if rule log is enable and log group is defined. + +.. cfgcmd:: set firewall name <name> rule <1-999999> disable +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> disable + + If you want to disable a rule but let it in the configuration. + +Matching criteria +================= + +There are a lot of matching criteria against which the package can be tested. + +.. cfgcmd:: set firewall name <name> rule <1-999999> connection-status nat + [destination | source] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> connection-status + nat [destination | source] + + Match criteria based on nat connection status. + +.. cfgcmd:: set firewall name <name> rule <1-999999> connection-mark + <1-2147483647> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> connection-mark + <1-2147483647> + + Match criteria based on connection mark. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source address + [address | addressrange | CIDR] +.. cfgcmd:: set firewall name <name> rule <1-999999> destination address + [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source address + [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination address + [address | addressrange | CIDR] + + This is similar to the network groups part, but here you are able to negate + the matching addresses. + + .. code-block:: none + + set firewall name WAN-IN-v4 rule 100 source address 192.0.2.10-192.0.2.11 + # with a '!' the rule match everything except the specified subnet + set firewall name WAN-IN-v4 rule 101 source address !203.0.113.0/24 + set firewall ipv6-name WAN-IN-v6 rule 100 source address 2001:db8::202 + +.. cfgcmd:: set firewall name <name> rule <1-999999> source address-mask + [address] +.. cfgcmd:: set firewall name <name> rule <1-999999> destination address-mask + [address] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source address-mask + [address] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination + address-mask [address] + + An arbitrary netmask can be applied to mask addresses to only match against + a specific portion. This is particularly useful with IPv6 and a zone-based + firewall as rules will remain valid if the IPv6 prefix changes and the host + portion of systems IPv6 address is static (for example, with SLAAC or `tokenised IPv6 addresses + <https://datatracker.ietf.org/doc/id/draft-chown-6man-tokenised-ipv6-identifiers-02.txt>`_) + + This functions for both individual addresses and address groups. + + .. code-block:: none + + # Match any IPv6 address with the suffix ::0000:0000:0000:beef + set firewall ipv6-name WAN-LAN-v6 rule 100 destination address ::beef + set firewall ipv6-name WAN-LAN-v6 rule 100 destination address-mask ::ffff:ffff:ffff:ffff + # Match any IPv4 address with `11` as the 2nd octet and `13` as the forth octet + set firewall name WAN-LAN-v4 rule 100 destination address 0.11.0.13 + set firewall name WAN-LAN-v4 rule 100 destination address-mask 0.255.0.255 + # Address groups + set firewall group ipv6-address-group WEBSERVERS address ::1000 + set firewall group ipv6-address-group WEBSERVERS address ::2000 + set firewall name WAN-LAN-v6 rule 200 source group address-group WEBSERVERS + set firewall name WAN-LAN-v6 rule 200 source address-mask ::ffff:ffff:ffff:ffff + +.. cfgcmd:: set firewall name <name> rule <1-999999> source fqdn <fqdn> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination fqdn <fqdn> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source fqdn <fqdn> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination fqdn + <fqdn> + + Specify a Fully Qualified Domain Name as source/destination matcher. Ensure + router is able to resolve such dns query. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source geoip country-code + <country> +.. cfgcmd:: set firewall name <name> rule <1-999999> source geoip inverse-match +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source geoip + country-code <country> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source geoip + inverse-match +.. cfgcmd:: set firewall name <name> rule <1-999999> destination geoip + country-code <country> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination geoip + inverse-match +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination geoip + country-code <country> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination geoip + inverse-match + +Match IP addresses based on its geolocation. +More info: `geoip matching +<https://wiki.nftables.org/wiki-nftables/index.php/GeoIP_matching>`_. + +Use inverse-match to match anything except the given country-codes. + +Data is provided by DB-IP.com under CC-BY-4.0 license. Attribution required, +permits redistribution so we can include a database in images(~3MB +compressed). Includes cron script (manually callable by op-mode update +geoip) to keep database and rules updated. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source mac-address + <mac-address> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source mac-address + <mac-address> + + Only in the source criteria, you can specify a mac-address. + + .. code-block:: none + + set firewall name LAN-IN-v4 rule 100 source mac-address 00:53:00:11:22:33 + set firewall name LAN-IN-v4 rule 101 source mac-address !00:53:00:aa:12:34 + +.. cfgcmd:: set firewall name <name> rule <1-999999> source port + [1-65535 | portname | start-end] +.. cfgcmd:: set firewall name <name> rule <1-999999> destination port + [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source port + [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination port + [1-65535 | portname | start-end] + + A port can be set with a port number or a name which is here + defined: ``/etc/services``. + + .. code-block:: none + + set firewall name WAN-IN-v4 rule 10 source port '22' + set firewall name WAN-IN-v4 rule 11 source port '!http' + set firewall name WAN-IN-v4 rule 12 source port 'https' + + Multiple source ports can be specified as a comma-separated list. + The whole list can also be "negated" using ``!``. For example: + + .. code-block:: none + + set firewall ipv6-name WAN-IN-v6 rule 10 source port '!22,https,3333-3338' + +.. cfgcmd:: set firewall name <name> rule <1-999999> source group + address-group <name | !name> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination group + address-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group + address-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group + address-group <name | !name> + + Use a specific address-group. Prepend character ``!`` for inverted matching + criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source group + network-group <name | !name> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination group + network-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group + network-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group + network-group <name | !name> + + Use a specific network-group. Prepend character ``!`` for inverted matching + criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source group + port-group <name | !name> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination group + port-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group + port-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group + port-group <name | !name> + + Use a specific port-group. Prepend character ``!`` for inverted matching + criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source group + domain-group <name | !name> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination group + domain-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group + domain-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group + domain-group <name | !name> + + Use a specific domain-group. Prepend character ``!`` for inverted matching + criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> source group + mac-group <name | !name> +.. cfgcmd:: set firewall name <name> rule <1-999999> destination group + mac-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group + mac-group <name | !name> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group + mac-group <name | !name> + + Use a specific mac-group. Prepend character ``!`` for inverted matching + criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> dscp [0-63 | start-end] +.. cfgcmd:: set firewall name <name> rule <1-999999> dscp-exclude [0-63 | + start-end] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> dscp [0-63 | + start-end] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> dscp-exclude [0-63 | + start-end] + + Match based on dscp value. + +.. cfgcmd:: set firewall name <name> rule <1-999999> fragment [match-frag | + match-non-frag] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> fragment [match-frag + | match-non-frag] + + Match based on fragment criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> icmp [code | type] + <0-255> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> icmpv6 [code | type] + <0-255> + + Match based on icmp|icmpv6 code and type. + +.. cfgcmd:: set firewall name <name> rule <1-999999> icmp type-name <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> icmpv6 type-name + <text> + + Match based on icmp|icmpv6 type-name criteria. Use tab for information + about what **type-name** criteria are supported. + +.. cfgcmd:: set firewall name <name> rule <1-999999> inbound-interface + <iface> +.. cfgcmd:: set firewall name <name> rule <1-999999> outbound-interface + <iface> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> inbound-interface + <iface> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> outbound-interface + <iface> + + Match based on inbound/outbound interface. Wilcard ``*`` can be used. + For example: ``eth2*`` + +.. cfgcmd:: set firewall name <name> rule <1-999999> ipsec [match-ipsec + | match-none] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> ipsec [match-ipsec + | match-none] + + Match based on ipsec criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> limit burst + <0-4294967295> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> limit burst + <0-4294967295> + + Match based on the maximum number of packets to allow in excess of rate. + +.. cfgcmd:: set firewall name <name> rule <1-999999> limit rate + <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> limit rate + <text> + + Match based on the maximum average rate, specified as **integer/unit**. + For example **5/minutes** + +.. cfgcmd:: set firewall name <name> rule <1-999999> packet-length + <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-length + <text> +.. cfgcmd:: set firewall name <name> rule <1-999999> packet-length-exclude + <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-length-exclude + <text> + + Match based on packet length criteria. Multiple values from 1 to 65535 + and ranges are supported. + +.. cfgcmd:: set firewall name <name> rule <1-999999> packet-type + [broadcast | host | multicast | other] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-type + [broadcast | host | multicast | other] + + Match based on packet type criteria. + +.. cfgcmd:: set firewall name <name> rule <1-999999> protocol [<text> | + <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> protocol [<text> | + <0-255> | all | tcp_udp] + + Match a protocol criteria. A protocol number or a name which is here + defined: ``/etc/protocols``. + Special names are ``all`` for all protocols and ``tcp_udp`` for tcp and udp + based packets. The ``!`` negate the selected protocol. + + .. code-block:: none + + set firewall name WAN-IN-v4 rule 10 protocol tcp_udp + set firewall name WAN-IN-v4 rule 11 protocol !tcp_udp + set firewall ipv6-name WAN-IN-v6 rule 10 protocol tcp + +.. cfgcmd:: set firewall name <name> rule <1-999999> recent count <1-255> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent count <1-255> +.. cfgcmd:: set firewall name <name> rule <1-999999> recent time + [second | minute | hour] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent time + [second | minute | hour] + + Match bases on recently seen sources. + +.. cfgcmd:: set firewall name <name> rule <1-999999> tcp flags <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> tcp flags <text> + + Allowed values fpr TCP flags: ``SYN``, ``ACK``, ``FIN``, ``RST``, ``URG``, + ``PSH``, ``ALL`` When specifying more than one flag, flags should be comma + separated. The ``!`` negate the selected protocol. + + .. code-block:: none + + set firewall name WAN-IN-v4 rule 10 tcp flags 'ACK' + set firewall name WAN-IN-v4 rule 12 tcp flags 'SYN' + set firewall name WAN-IN-v4 rule 13 tcp flags 'SYN,!ACK,!FIN,!RST' + +.. cfgcmd:: set firewall name <name> rule <1-999999> state [established | + invalid | new | related] [enable | disable] +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> state [established | + invalid | new | related] [enable | disable] + + Match against the state of a packet. + +.. cfgcmd:: set firewall name <name> rule <1-999999> time startdate <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time startdate <text> +.. cfgcmd:: set firewall name <name> rule <1-999999> time starttime <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time starttime <text> +.. cfgcmd:: set firewall name <name> rule <1-999999> time stopdate <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time stopdate <text> +.. cfgcmd:: set firewall name <name> rule <1-999999> time stoptime <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time stoptime <text> +.. cfgcmd:: set firewall name <name> rule <1-999999> time weekdays <text> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time weekdays <text> + + Time to match the defined rule. + +.. cfgcmd:: set firewall name <name> rule <1-999999> ttl <eq | gt | lt> <0-255> + + Match time to live parameter, where 'eq' stands for 'equal'; 'gt' stands for + 'greater than', and 'lt' stands for 'less than'. + +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> hop-limit <eq | gt | + lt> <0-255> + + Match hop-limit parameter, where 'eq' stands for 'equal'; 'gt' stands for + 'greater than', and 'lt' stands for 'less than'. + +.. cfgcmd:: set firewall name <name> rule <1-999999> recent count <1-255> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent count <1-255> +.. cfgcmd:: set firewall name <name> rule <1-999999> recent time <second | + minute | hour> +.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent time <second | + minute | hour> + + Match when 'count' amount of connections are seen within 'time'. These + matching criteria can be used to block brute-force attempts. + +*********************************** +Applying a Rule-Set to an Interface +*********************************** + +A Rule-Set can be applied to every interface: + +* ``in``: Ruleset for forwarded packets on an inbound interface +* ``out``: Ruleset for forwarded packets on an outbound interface +* ``local``: Ruleset for packets destined for this router + +.. cfgcmd:: set firewall interface <interface> [in | out | local] [name | + ipv6-name] <rule-set> + + + Here are some examples for applying a rule-set to an interface + + .. code-block:: none + + set firewall interface eth1.100 in name LANv4-IN + set firewall interface eth1.100 out name LANv4-OUT + set firewall interface bond0 in name LANv4-IN + set firewall interface vtun1 in name LANv4-IN + set firewall interface eth2* in name LANv4-IN + + .. note:: + As you can see in the example here, you can assign the same rule-set to + several interfaces. An interface can only have one rule-set per chain. + + .. note:: + You can use wildcard ``*`` to match a group of interfaces. + +*********************** +Operation-mode Firewall +*********************** + +Rule-set overview +================= + +.. opcmd:: show firewall + + This will show you a basic firewall overview + + .. code-block:: none + + vyos@vyos:~$ show firewall + + ------------------------ + Firewall Global Settings + ------------------------ + + Firewall state-policy for all IPv4 and Ipv6 traffic + + state action log + ----- ------ --- + invalid accept disabled + established accept disabled + related accept disabled + + ----------------------------- + Rulesets Information + ----------------------------- + -------------------------------------------------------------------------- + IPv4 Firewall "DMZv4-1-IN": + + Active on (eth0,IN) + + rule action proto packets bytes + ---- ------ ----- ------- ----- + 10 accept icmp 0 0 + condition - saddr 10.1.0.0/24 daddr 0.0.0.0/0 LOG enabled + + 10000 drop all 0 0 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 LOG enabled + + -------------------------------------------------------------------------- + IPv4 Firewall "DMZv4-1-OUT": + + Active on (eth0,OUT) + + rule action proto packets bytes + ---- ------ ----- ------- ----- + 10 accept tcp_udp 1 60 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 match-DST-PORT-GROUP DMZ-Ports /* + DMZv4-1-OUT-10 */LOG enabled + + 11 accept icmp 1 84 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 /* DMZv4-1-OUT-11 */LOG enabled + + 10000 drop all 6 360 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 LOG enabled + + -------------------------------------------------------------------------- + IPv4 Firewall "LANv4-IN": + + Inactive - Not applied to any interfaces or zones. + + rule action proto packets bytes + ---- ------ ----- ------- ----- + 10 accept all 0 0 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 /* LANv4-IN-10 */ + + 10000 drop all 0 0 + condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 + +.. opcmd:: show firewall summary + + This will show you a summary of rule-sets and groups + + .. code-block:: none + + vyos@vyos:~$ show firewall summary + + ------------------------ + Firewall Global Settings + ------------------------ + + Firewall state-policy for all IPv4 and Ipv6 traffic + + state action log + ----- ------ --- + invalid accept disabled + related accept disabled + established accept disabled + + ------------------------ + Firewall Rulesets + ------------------------ + + IPv4 name: + + Rule-set name Description References + ------------- ----------- ---------- + DMZv4-1-OUT (eth0,OUT) + DMZv4-1-IN (eth0,IN) + + ------------------------ + Firewall Groups + ------------------------ + + Port Groups: + + Group name Description References + ---------- ----------- ---------- + DMZ-Ports DMZv4-1-OUT-10-destination + + Network Groups: + + Group name Description References + ---------- ----------- ---------- + LANv4 LANv4-IN-10-source, + DMZv4-1-OUT-10-source, + DMZv4-1-OUT-11-source + +.. opcmd:: show firewall statistics + + This will show you a statistic of all rule-sets since the last boot. + +.. opcmd:: show firewall [name | ipv6name] <name> rule <1-999999> + + This command will give an overview of a rule in a single rule-set + +.. opcmd:: show firewall group <name> + + Overview of defined groups. You see the type, the members, and where the + group is used. + + .. code-block:: none + + vyos@vyos:~$ show firewall group DMZ-Ports + Name : DMZ-Ports + Type : port + References : none + Members : + 80 + 443 + 8080 + 8443 + + vyos@vyos:~$ show firewall group LANv4 + Name : LANv4 + Type : network + References : LANv4-IN-10-source + Members : + 10.10.0.0/16 + +.. opcmd:: show firewall [name | ipv6name] <name> + + This command will give an overview of a single rule-set. + +.. opcmd:: show firewall [name | ipv6name] <name> statistics + + This will show you a rule-set statistic since the last boot. + +.. opcmd:: show firewall [name | ipv6name] <name> rule <1-999999> + + This command will give an overview of a rule in a single rule-set. + + +Zone-Policy Overview +==================== + +.. opcmd:: show zone-policy zone <name> + + Use this command to get an overview of a zone. + + .. code-block:: none + + vyos@vyos:~$ show zone-policy zone DMZ + ------------------- + Name: DMZ + + Interfaces: eth0 eth1 + + From Zone: + name firewall + ---- -------- + LAN DMZv4-1-OUT + + +Show Firewall log +================= + +.. opcmd:: show log firewall [name | ipv6name] <name> + + Show the logs of a specific Rule-Set. + +.. note:: + At the moment it not possible to look at the whole firewall log with VyOS + operational commands. All logs will save to ``/var/logs/messages``. + For example: ``grep '10.10.0.10' /var/log/messages`` + + + +Example Partial Config +====================== + +.. code-block:: none + + firewall { + interface eth0 { + in { + name FROM-INTERNET + } + } + all-ping enable + broadcast-ping disable + config-trap disable + group { + network-group BAD-NETWORKS { + network 198.51.100.0/24 + network 203.0.113.0/24 + } + network-group GOOD-NETWORKS { + network 192.0.2.0/24 + } + port-group BAD-PORTS { + port 65535 + } + } + name FROM-INTERNET { + default-action accept + description "From the Internet" + rule 10 { + action accept + description "Authorized Networks" + protocol all + source { + group { + network-group GOOD-NETWORKS + } + } + } + rule 11 { + action drop + description "Bad Networks" + protocol all + source { + group { + network-group BAD-NETWORKS + } + } + } + rule 30 { + action drop + description "BAD PORTS" + destination { + group { + port-group BAD-PORTS + } + } + log enable + protocol all + } + } + } + interfaces { + ethernet eth1 { + address dhcp + description OUTSIDE + duplex auto + } + } + + +Update geoip database +===================== + +.. opcmd:: update geoip + + Command used to update GeoIP database and firewall sets.
\ No newline at end of file diff --git a/docs/configuration/firewall/general.rst b/docs/configuration/firewall/general.rst index c217ba6c..3ef60263 100644 --- a/docs/configuration/firewall/general.rst +++ b/docs/configuration/firewall/general.rst @@ -13,27 +13,85 @@ Overview VyOS makes use of Linux `netfilter <https://netfilter.org/>`_ for packet filtering. -The firewall supports the creation of groups for ports, addresses, and -networks (implemented using netfilter ipset) and the option of interface -or zone based firewall policy. +The firewall supports the creation of groups for addresses, domains, +interfaces, mac-addresses, networks and port groups. This groups can be used +later in firewall ruleset as desired. .. note:: **Important note on usage of terms:** - The firewall makes use of the terms `in`, `out`, and `local` - for firewall policy. Users experienced with netfilter often confuse - `in` to be a reference to the `INPUT` chain, and `out` the `OUTPUT` - chain from netfilter. This is not the case. These instead indicate - the use of the `FORWARD` chain and either the input or output - interface. The `INPUT` chain, which is used for local traffic to the - OS, is a reference to as `local` with respect to its input interface. + The firewall makes use of the terms `forward`, `input`, and `output` + for firewall policy. More information of Netfilter hooks and Linux + networking packet flows can be found in `Netfilter-Hooks + <https://wiki.nftables.org/wiki-nftables/index.php/Netfilter_hooks>`_ -*************** -Global settings -*************** +Main structure is shown next: + +.. code-block:: none + + - set firewall + * global-options + + all-ping + + broadcast-ping + + ... + * group + - address-group + - ipv6-address-group + - network-group + - ipv6-network-group + - interface-group + - mac-group + - port-group + - domain-group + * ipv4 + - forward + + filter + - input + + filter + - output + + filter + - name + + custom_name + * ipv6 + - forward + + filter + - input + + filter + - output + + filter + - ipv6-name + + custom_name + +Where, main key words and configuration paths that needs to be understood: + + * For firewall filtering, configuration should be done in ``set firewall + [ipv4 | ipv6] ...`` + + * For transit traffic, which is received by the router and forwarded, + base chain is **forward filter**: ``set firewall [ipv4 | ipv6] + forward filter ...`` + + * For traffic originated by the router, base chain is **output filter**: + ``set firewall [ipv4 | ipv6] output filter ...`` + + * For traffic towards the router itself, base chain is **input filter**: + ``set firewall [ipv4 | ipv6] input filter ...`` + +.. note:: **Important note about default-actions:** + If default action for any chain is not defined, then the default + action is set to **drop** for that chain. + +Custom firewall chains can be created, with commands +``set firewall [ipv4 | ipv6] [name | ipv6-name] <name> ...``. In Order to use +such custom chain, a rule with **action jump**, and the appropiate **target** +should be defined in a base chain. + +************** +Global Options +************** Some firewall settings are global and have an affect on the whole system. -.. cfgcmd:: set firewall all-ping [enable | disable] +.. cfgcmd:: set firewall global-options all-ping [enable | disable] By default, when VyOS receives an ICMP echo request packet destined for itself, it will answer with an ICMP echo reply, unless you avoid it @@ -44,12 +102,12 @@ Some firewall settings are global and have an affect on the whole system. command. This command affects only to LOCAL (packets destined for your VyOS system), not to IN or OUT traffic. - .. note:: **firewall all-ping** affects only to LOCAL and it always - behaves in the most restrictive way + .. note:: **firewall global-options all-ping** affects only to LOCAL + and it always behaves in the most restrictive way .. code-block:: none - set firewall all-ping enable + set firewall global-options all-ping enable When the command above is set, VyOS will answer every ICMP echo request addressed to itself, but that will only happen if no other rule is @@ -58,21 +116,21 @@ Some firewall settings are global and have an affect on the whole system. .. code-block:: none - set firewall all-ping disable + set firewall global-options all-ping disable When the command above is set, VyOS will answer no ICMP echo request addressed to itself at all, no matter where it comes from or whether more specific rules are being applied to accept them. -.. cfgcmd:: set firewall broadcast-ping [enable | disable] +.. cfgcmd:: set firewall global-options broadcast-ping [enable | disable] This setting enable or disable the response of icmp broadcast messages. The following system parameter will be altered: * ``net.ipv4.icmp_echo_ignore_broadcasts`` -.. cfgcmd:: set firewall ip-src-route [enable | disable] -.. cfgcmd:: set firewall ipv6-src-route [enable | disable] +.. cfgcmd:: set firewall global-options ip-src-route [enable | disable] +.. cfgcmd:: set firewall global-options ipv6-src-route [enable | disable] This setting handle if VyOS accept packets with a source route option. The following system parameter will be altered: @@ -80,8 +138,9 @@ Some firewall settings are global and have an affect on the whole system. * ``net.ipv4.conf.all.accept_source_route`` * ``net.ipv6.conf.all.accept_source_route`` -.. cfgcmd:: set firewall receive-redirects [enable | disable] -.. cfgcmd:: set firewall ipv6-receive-redirects [enable | disable] +.. cfgcmd:: set firewall global-options receive-redirects [enable | disable] +.. cfgcmd:: set firewall global-options ipv6-receive-redirects + [enable | disable] enable or disable of ICMPv4 or ICMPv6 redirect messages accepted by VyOS. The following system parameter will be altered: @@ -89,76 +148,51 @@ Some firewall settings are global and have an affect on the whole system. * ``net.ipv4.conf.all.accept_redirects`` * ``net.ipv6.conf.all.accept_redirects`` -.. cfgcmd:: set firewall send-redirects [enable | disable] +.. cfgcmd:: set firewall global-options send-redirects [enable | disable] - enable or disable ICMPv4 redirect messages send by VyOS + enable or disable ICMPv4 redirect messages send by VyOS The following system parameter will be altered: * ``net.ipv4.conf.all.send_redirects`` -.. cfgcmd:: set firewall log-martians [enable | disable] +.. cfgcmd:: set firewall global-options log-martians [enable | disable] enable or disable the logging of martian IPv4 packets. The following system parameter will be altered: * ``net.ipv4.conf.all.log_martians`` -.. cfgcmd:: set firewall source-validation [strict | loose | disable] +.. cfgcmd:: set firewall global-options source-validation + [strict | loose | disable] Set the IPv4 source validation mode. The following system parameter will be altered: * ``net.ipv4.conf.all.rp_filter`` -.. cfgcmd:: set firewall syn-cookies [enable | disable] +.. cfgcmd:: set firewall global-options syn-cookies [enable | disable] Enable or Disable if VyOS use IPv4 TCP SYN Cookies. The following system parameter will be altered: * ``net.ipv4.tcp_syncookies`` -.. cfgcmd:: set firewall twa-hazards-protection [enable | disable] +.. cfgcmd:: set firewall global-options twa-hazards-protection + [enable | disable] Enable or Disable VyOS to be :rfc:`1337` conform. The following system parameter will be altered: * ``net.ipv4.tcp_rfc1337`` -.. cfgcmd:: set firewall state-policy established action [accept | drop | - reject] - -.. cfgcmd:: set firewall state-policy established log enable - - Set the global setting for an established connection. - -.. cfgcmd:: set firewall state-policy invalid action [accept | drop | reject] - -.. cfgcmd:: set firewall state-policy invalid log enable - - Set the global setting for invalid packets. - -.. cfgcmd:: set firewall state-policy related action [accept | drop | reject] - -.. cfgcmd:: set firewall state-policy related log enable - - Set the global setting for related connections. - - ****** Groups ****** Firewall groups represent collections of IP addresses, networks, ports, -mac addresses or domains. Once created, a group can be referenced by -firewall, nat and policy route rules as either a source or destination -matcher. Members can be added or removed from a group without changes to, -or the need to reload, individual firewall rules. - -Groups need to have unique names. Even though some contain IPv4 -addresses and others contain IPv6 addresses, they still need to have -unique names, so you may want to append "-v4" or "-v6" to your group -names. - +mac addresses, domains or interfaces. Once created, a group can be referenced +by firewall, nat and policy route rules as either a source or destination +matcher, and as inbpund/outbound in the case of interface group. Address Groups ============== @@ -205,7 +239,25 @@ recommended. .. cfgcmd:: set firewall group network-group <name> description <text> .. cfgcmd:: set firewall group ipv6-network-group <name> description <text> - Provide a IPv4 or IPv6 network group description. + Provide an IPv4 or IPv6 network group description. + +Interface Groups +================ + +An **interface group** represents a collection of interfaces. + +.. cfgcmd:: set firewall group interface-group <name> interface <text> + + Define an interface group. Wildcard are accepted too. + +.. code-block:: none + + set firewall group interface-group LAN interface bond1001 + set firewall group interface-group LAN interface eth3* + +.. cfgcmd:: set firewall group interface-group <name> description <text> + + Provide an interface group description Port Groups =========== @@ -246,6 +298,9 @@ A **mac group** represents a collection of mac addresses. set firewall group mac-group MAC-G01 mac-address 88:a4:c2:15:b6:4f set firewall group mac-group MAC-G01 mac-address 4c:d5:77:c0:19:81 +.. cfgcmd:: set firewall group mac-group <name> description <text> + + Provide a mac group description. Domain Groups ============= @@ -260,167 +315,316 @@ A **domain group** represents a collection of domains. set firewall group domain-group DOM address example.com +.. cfgcmd:: set firewall group domain-group <name> description <text> -********* -Rule-Sets -********* + Provide a domain group description. -A rule-set is a named collection of firewall rules that can be applied -to an interface or a zone. Each rule is numbered, has an action to apply -if the rule is matched, and the ability to specify the criteria to -match. Data packets go through the rules from 1 - 999999, at the first match -the action of the rule will be executed. +************** +Firewall Rules +************** -.. cfgcmd:: set firewall name <name> description <text> -.. cfgcmd:: set firewall ipv6-name <name> description <text> +For firewall filtering, firewall rules needs to be created. Each rule is +numbered, has an action to apply if the rule is matched, and the ability +to specify multiple criteria matchers. Data packets go through the rules +from 1 - 999999, so order is crucial. At the first match the action of the +rule will be executed. - Provide a rule-set description. +Actions +======= -.. cfgcmd:: set firewall name <name> default-action [accept | drop | jump | - reject | return] -.. cfgcmd:: set firewall ipv6-name <name> default-action [accept | drop | - jump | reject | return] +If a rule is defined, then an action must be defined for it. This tells the +firewall what to do if all criteria matchers defined for such rule do match. - This set the default action of the rule-set if no rule matched a packet - criteria. If defacult-action is set to ``jump``, then - ``default-jump-target`` is also needed. +The action can be : -.. cfgcmd:: set firewall name <name> default-jump-target <text> -.. cfgcmd:: set firewall ipv6-name <name> default-jump-target <text> + * ``accept``: accept the packet. - To be used only when ``defult-action`` is set to ``jump``. Use this - command to specify jump target for default rule. + * ``drop``: drop the packet. -.. cfgcmd:: set firewall name <name> enable-default-log -.. cfgcmd:: set firewall ipv6-name <name> enable-default-log + * ``reject``: reject the packet. - Use this command to enable the logging of the default action. + * ``jump``: jump to another custom chain. -.. cfgcmd:: set firewall name <name> rule <1-999999> action [accept | drop | - jump | queue | reject | return] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> action [accept | - drop | jump | queue | reject | return] + * ``return``: Return from the current chain and continue at the next rule + of the last chain. - This required setting defines the action of the current rule. If action - is set to ``jump``, then ``jump-target`` is also needed. + * ``queue``: Enqueue packet to userspace. -.. cfgcmd:: set firewall name <name> rule <1-999999> jump-target <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> jump-target <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> action + [accept | drop | jump | queue | reject | return] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> action + [accept | drop | jump | queue | reject | return] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> action + [accept | drop | jump | queue | reject | return] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> action + [accept | drop | jump | queue | reject | return] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> action + [accept | drop | jump | queue | reject | return] - To be used only when ``action`` is set to ``jump``. Use this - command to specify jump target. + This required setting defines the action of the current rule. If action is + set to jump, then jump-target is also needed. -.. cfgcmd:: set firewall name <name> rule <1-999999> queue <0-65535> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> queue <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + jump-target <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + jump-target <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + jump-target <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + jump-target <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + jump-target <text> - Use this command to set the target to use. Action queue must be defined - to use this setting + To be used only when action is set to jump. Use this command to specify + jump target. -.. cfgcmd:: set firewall name <name> rule <1-999999> queue-options - <bypass-fanout> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> queue-options - <bypass-fanout> +Also, **default-action** is an action that takes place whenever a packet does +not match any rule in it's chain. For base chains, possible options for +**default-action** are **accept** or **drop**. - Options used for queue target. Action queue must be defined to use this - setting +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter default-action + [accept | drop] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter default-action + [accept | drop] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter default-action + [accept | drop] +.. cfgcmd:: set firewall ipv4 name <name> default-action + [accept | drop | jump | queue | reject | return] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> default-action + [accept | drop | jump | queue | reject | return] -.. cfgcmd:: set firewall name <name> rule <1-999999> description <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> description <text> + This set the default action of the rule-set if no rule matched a packet + criteria. If defacult-action is set to ``jump``, then + ``default-jump-target`` is also needed. Note that for base chains, default + action can only be set to ``accept`` or ``drop``, while on custom chain, + more actions are available. - Provide a description for each rule. +.. cfgcmd:: set firewall name <name> default-jump-target <text> +.. cfgcmd:: set firewall ipv6-name <name> default-jump-target <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> log [disable | enable] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log [disable | - enable] + To be used only when ``defult-action`` is set to ``jump``. Use this + command to specify jump target for default rule. + +.. note:: **Important note about default-actions:** + If default action for any chain is not defined, then the default + action is set to **drop** for that chain. + + +Firewall Logs +============= + +Logging can be enable for every single firewall rule. If enabled, other +log options can be defined. + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> log + [disable | enable] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> log + [disable | enable] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> log + [disable | enable] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> log + [disable | enable] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> log + [disable | enable] Enable or disable logging for the matched packet. -.. cfgcmd:: set firewall name <name> rule <1-999999> log-options level - [emerg | alert | crit | err | warn | notice | info | debug] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options level - [emerg | alert | crit | err | warn | notice | info | debug] +.. cfgcmd:: set firewall ipv4 name <name> enable-default-log +.. cfgcmd:: set firewall ipv6 ipv6-name <name> enable-default-log + + Use this command to enable the logging of the default action on + custom chains. + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + log-options level [emerg | alert | crit | err | warn | notice + | info | debug] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + log-options level [emerg | alert | crit | err | warn | notice + | info | debug] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + log-options level [emerg | alert | crit | err | warn | notice + | info | debug] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + log-options level [emerg | alert | crit | err | warn | notice + | info | debug] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + log-options level [emerg | alert | crit | err | warn | notice + | info | debug] Define log-level. Only applicable if rule log is enable. -.. cfgcmd:: set firewall name <name> rule <1-999999> log-options group - <0-65535> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options group - <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + log-options group <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + log-options group <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + log-options group <0-65535> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + log-options group <0-65535> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + log-options group <0-65535> Define log group to send message to. Only applicable if rule log is enable. -.. cfgcmd:: set firewall name <name> rule <1-999999> log-options snaplen - <0-9000> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options snaplen - <0-9000> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + log-options snapshot-length <0-9000> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + log-options snapshot-length <0-9000> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + log-options snapshot-length <0-9000> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + log-options snapshot-length <0-9000> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + log-options snapshot-length <0-9000> Define length of packet payload to include in netlink message. Only applicable if rule log is enable and log group is defined. -.. cfgcmd:: set firewall name <name> rule <1-999999> log-options - queue-threshold <0-65535> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> log-options - queue-threshold <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + log-options queue-threshold <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + log-options queue-threshold <0-65535> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + log-options queue-threshold <0-65535> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + log-options queue-threshold <0-65535> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + log-options queue-threshold <0-65535> Define number of packets to queue inside the kernel before sending them to userspace. Only applicable if rule log is enable and log group is defined. -.. cfgcmd:: set firewall name <name> rule <1-999999> disable -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> disable - If you want to disable a rule but let it in the configuration. +Firewall Description +==================== + +For reference, a description can be defined for every single rule, and for +every defined custom chain. + +.. cfgcmd:: set firewall ipv4 name <name> description <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> description <text> + + Provide a rule-set description to a custom firewall chain. + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + description <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + description <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + description <text> + +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> description <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> description <text> + + Provide a description for each rule. + + +Rule Status +=========== + +When defining a rule, it is enable by default. In some cases, it is useful to +just disable the rule, rather than removing it. + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> disable +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> disable +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> disable +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> disable +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> disable + + Command for disabling a rule but keep it in the configuration. + Matching criteria ================= There are a lot of matching criteria against which the package can be tested. -.. cfgcmd:: set firewall name <name> rule <1-999999> connection-status nat - [destination | source] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> connection-status - nat [destination | source] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + connection-status nat [destination | source] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + connection-status nat [destination | source] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + connection-status nat [destination | source] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + connection-status nat [destination | source] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + connection-status nat [destination | source] Match criteria based on nat connection status. -.. cfgcmd:: set firewall name <name> rule <1-999999> connection-mark - <1-2147483647> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> connection-mark - <1-2147483647> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + connection-mark <1-2147483647> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + connection-mark <1-2147483647> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + connection-mark <1-2147483647> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + connection-mark <1-2147483647> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + connection-mark <1-2147483647> Match criteria based on connection mark. -.. cfgcmd:: set firewall name <name> rule <1-999999> source address - [address | addressrange | CIDR] -.. cfgcmd:: set firewall name <name> rule <1-999999> destination address - [address | addressrange | CIDR] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source address - [address | addressrange | CIDR] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination address - [address | addressrange | CIDR] - - This is similar to the network groups part, but here you are able to negate - the matching addresses. +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source address [address | addressrange | CIDR] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source address [address | addressrange | CIDR] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source address [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source address [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source address [address | addressrange | CIDR] + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination address [address | addressrange | CIDR] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination address [address | addressrange | CIDR] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination address [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination address [address | addressrange | CIDR] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination address [address | addressrange | CIDR] + + Match criteria based on source and/or destination address. This is similar + to the network groups part, but here you are able to negate the matching + addresses. .. code-block:: none - set firewall name WAN-IN-v4 rule 100 source address 192.0.2.10-192.0.2.11 + set firewall ipv4 name FOO rule 50 source address 192.0.2.10-192.0.2.11 # with a '!' the rule match everything except the specified subnet - set firewall name WAN-IN-v4 rule 101 source address !203.0.113.0/24 - set firewall ipv6-name WAN-IN-v6 rule 100 source address 2001:db8::202 - -.. cfgcmd:: set firewall name <name> rule <1-999999> source address-mask - [address] -.. cfgcmd:: set firewall name <name> rule <1-999999> destination address-mask - [address] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source address-mask - [address] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination - address-mask [address] + set firewall ipv4 input filter FOO rule 51 source address !203.0.113.0/24 + set firewall ipv6 ipv6-name FOO rule 100 source address 2001:db8::202 + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source address-mask [address] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source address-mask [address] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source address-mask [address] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source address-mask [address] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source address-mask [address] + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination address-mask [address] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination address-mask [address] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination address-mask [address] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination address-mask [address] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination address-mask [address] An arbitrary netmask can be applied to mask addresses to only match against - a specific portion. This is particularly useful with IPv6 and a zone-based - firewall as rules will remain valid if the IPv6 prefix changes and the host - portion of systems IPv6 address is static (for example, with SLAAC or `tokenised IPv6 addresses + a specific portion. This is particularly useful with IPv6 as rules will + remain valid if the IPv6 prefix changes and the host + portion of systems IPv6 address is static (for example, with SLAAC or + `tokenised IPv6 addresses <https://datatracker.ietf.org/doc/id/draft-chown-6man-tokenised-ipv6-identifiers-02.txt>`_) This functions for both individual addresses and address groups. @@ -428,238 +632,465 @@ There are a lot of matching criteria against which the package can be tested. .. code-block:: none # Match any IPv6 address with the suffix ::0000:0000:0000:beef - set firewall ipv6-name WAN-LAN-v6 rule 100 destination address ::beef - set firewall ipv6-name WAN-LAN-v6 rule 100 destination address-mask ::ffff:ffff:ffff:ffff + set firewall ipv6 forward filter rule 100 destination address ::beef + set firewall ipv6 forward filter rule 100 destination address-mask ::ffff:ffff:ffff:ffff # Match any IPv4 address with `11` as the 2nd octet and `13` as the forth octet - set firewall name WAN-LAN-v4 rule 100 destination address 0.11.0.13 - set firewall name WAN-LAN-v4 rule 100 destination address-mask 0.255.0.255 + set firewall ipv4 name FOO rule 100 destination address 0.11.0.13 + set firewall ipv4 name FOO rule 100 destination address-mask 0.255.0.255 # Address groups set firewall group ipv6-address-group WEBSERVERS address ::1000 set firewall group ipv6-address-group WEBSERVERS address ::2000 - set firewall name WAN-LAN-v6 rule 200 source group address-group WEBSERVERS - set firewall name WAN-LAN-v6 rule 200 source address-mask ::ffff:ffff:ffff:ffff - -.. cfgcmd:: set firewall name <name> rule <1-999999> source fqdn <fqdn> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination fqdn <fqdn> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source fqdn <fqdn> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination fqdn - <fqdn> + set firewall ipv6 forward filter rule 200 source group address-group WEBSERVERS + set firewall ipv6 forward filter rule 200 source address-mask ::ffff:ffff:ffff:ffff + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source fqdn <fqdn> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source fqdn <fqdn> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source fqdn <fqdn> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source fqdn <fqdn> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source fqdn <fqdn> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination fqdn <fqdn> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination fqdn <fqdn> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination fqdn <fqdn> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination fqdn <fqdn> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination fqdn <fqdn> Specify a Fully Qualified Domain Name as source/destination matcher. Ensure router is able to resolve such dns query. -.. cfgcmd:: set firewall name <name> rule <1-999999> source geoip country-code - <country> -.. cfgcmd:: set firewall name <name> rule <1-999999> source geoip inverse-match -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source geoip - country-code <country> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source geoip - inverse-match -.. cfgcmd:: set firewall name <name> rule <1-999999> destination geoip - country-code <country> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination geoip - inverse-match -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination geoip - country-code <country> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination geoip - inverse-match - -Match IP addresses based on its geolocation. -More info: `geoip matching -<https://wiki.nftables.org/wiki-nftables/index.php/GeoIP_matching>`_. - -Use inverse-match to match anything except the given country-codes. +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source geoip country-code <country> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source geoip country-code <country> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source geoip country-code <country> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source geoip country-code <country> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source geoip country-code <country> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination geoip country-code <country> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination geoip country-code <country> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination geoip country-code <country> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination geoip country-code <country> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination geoip country-code <country> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source geoip inverse-match +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source geoip inverse-match +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source geoip inverse-match +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source geoip inverse-match +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source geoip inverse-match + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination geoip inverse-match +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination geoip inverse-match +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination geoip inverse-match +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination geoip inverse-match +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination geoip inverse-match + + Match IP addresses based on its geolocation. More info: `geoip matching + <https://wiki.nftables.org/wiki-nftables/index.php/GeoIP_matching>`_. + Use inverse-match to match anything except the given country-codes. Data is provided by DB-IP.com under CC-BY-4.0 license. Attribution required, permits redistribution so we can include a database in images(~3MB compressed). Includes cron script (manually callable by op-mode update geoip) to keep database and rules updated. -.. cfgcmd:: set firewall name <name> rule <1-999999> source mac-address - <mac-address> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source mac-address - <mac-address> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source mac-address <mac-address> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source mac-address <mac-address> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source mac-address <mac-address> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source mac-address <mac-address> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source mac-address <mac-address> Only in the source criteria, you can specify a mac-address. .. code-block:: none - set firewall name LAN-IN-v4 rule 100 source mac-address 00:53:00:11:22:33 - set firewall name LAN-IN-v4 rule 101 source mac-address !00:53:00:aa:12:34 - -.. cfgcmd:: set firewall name <name> rule <1-999999> source port - [1-65535 | portname | start-end] -.. cfgcmd:: set firewall name <name> rule <1-999999> destination port - [1-65535 | portname | start-end] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source port - [1-65535 | portname | start-end] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination port - [1-65535 | portname | start-end] + set firewall ipv4 input filter rule 100 source mac-address 00:53:00:11:22:33 + set firewall ipv4 input filter rule 101 source mac-address !00:53:00:aa:12:34 + + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source port [1-65535 | portname | start-end] + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination port [1-65535 | portname | start-end] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination port [1-65535 | portname | start-end] A port can be set with a port number or a name which is here defined: ``/etc/services``. .. code-block:: none - set firewall name WAN-IN-v4 rule 10 source port '22' - set firewall name WAN-IN-v4 rule 11 source port '!http' - set firewall name WAN-IN-v4 rule 12 source port 'https' + set firewall ipv4 forward filter rule 10 source port '22' + set firewall ipv4 forward filter rule 11 source port '!http' + set firewall ipv4 forward filter rule 12 source port 'https' Multiple source ports can be specified as a comma-separated list. The whole list can also be "negated" using ``!``. For example: .. code-block:: none - set firewall ipv6-name WAN-IN-v6 rule 10 source port '!22,https,3333-3338' - -.. cfgcmd:: set firewall name <name> rule <1-999999> source group - address-group <name | !name> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination group - address-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group - address-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group - address-group <name | !name> + set firewall ipv6 forward filter rule 10 source port '!22,https,3333-3338' + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source group address-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source group address-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source group address-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source group address-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source group address-group <name | !name> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination group address-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination group address-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination group address-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination group address-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination group address-group <name | !name> Use a specific address-group. Prepend character ``!`` for inverted matching criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> source group - network-group <name | !name> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination group - network-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group - network-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group - network-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source group network-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source group network-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source group network-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source group network-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source group network-group <name | !name> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination group network-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination group network-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination group network-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination group network-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination group network-group <name | !name> Use a specific network-group. Prepend character ``!`` for inverted matching criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> source group - port-group <name | !name> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination group - port-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group - port-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group - port-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source group port-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source group port-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source group port-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source group port-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source group port-group <name | !name> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination group port-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination group port-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination group port-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination group port-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination group port-group <name | !name> Use a specific port-group. Prepend character ``!`` for inverted matching criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> source group - domain-group <name | !name> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination group - domain-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group - domain-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group - domain-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source group domain-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source group domain-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source group domain-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source group domain-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source group domain-group <name | !name> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination group domain-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination group domain-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination group domain-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination group domain-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination group domain-group <name | !name> Use a specific domain-group. Prepend character ``!`` for inverted matching criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> source group - mac-group <name | !name> -.. cfgcmd:: set firewall name <name> rule <1-999999> destination group - mac-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> source group - mac-group <name | !name> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> destination group - mac-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + source group mac-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + source group mac-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + source group mac-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + source group mac-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + source group mac-group <name | !name> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + destination group mac-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + destination group mac-group <name | !name> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + destination group mac-group <name | !name> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + destination group mac-group <name | !name> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + destination group mac-group <name | !name> Use a specific mac-group. Prepend character ``!`` for inverted matching criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> dscp [0-63 | start-end] -.. cfgcmd:: set firewall name <name> rule <1-999999> dscp-exclude [0-63 | - start-end] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> dscp [0-63 | - start-end] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> dscp-exclude [0-63 | - start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + dscp [0-63 | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + dscp [0-63 | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + dscp [0-63 | start-end] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + dscp [0-63 | start-end] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + dscp [0-63 | start-end] + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + dscp-exclude [0-63 | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + dscp-exclude [0-63 | start-end] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + dscp-exclude [0-63 | start-end] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + dscp-exclude [0-63 | start-end] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + dscp-exclude [0-63 | start-end] Match based on dscp value. -.. cfgcmd:: set firewall name <name> rule <1-999999> fragment [match-frag | - match-non-frag] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> fragment [match-frag - | match-non-frag] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + fragment [match-frag | match-non-frag] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + fragment [match-frag | match-non-frag] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + fragment [match-frag | match-non-frag] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + fragment [match-frag | match-non-frag] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + fragment [match-frag | match-non-frag] Match based on fragment criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> icmp [code | type] - <0-255> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> icmpv6 [code | type] - <0-255> +.. cfgcmd:: set firewall ipv4 forward filter rule <1-999999> + icmp [code | type] <0-255> +.. cfgcmd:: set firewall ipv4 input filter rule <1-999999> + icmp [code | type] <0-255> +.. cfgcmd:: set firewall ipv4 output filter rule <1-999999> + icmp [code | type] <0-255> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + icmp [code | type] <0-255> +.. cfgcmd:: set firewall ipv6 forward filter rule <1-999999> + icmpv6 [code | type] <0-255> +.. cfgcmd:: set firewall ipv6 input filter rule <1-999999> + icmpv6 [code | type] <0-255> +.. cfgcmd:: set firewall ipv6 output filter rule <1-999999> + icmpv6 [code | type] <0-255> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + icmpv6 [code | type] <0-255> Match based on icmp|icmpv6 code and type. -.. cfgcmd:: set firewall name <name> rule <1-999999> icmp type-name <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> icmpv6 type-name - <text> +.. cfgcmd:: set firewall ipv4 forward filter rule <1-999999> + icmp type-name <text> +.. cfgcmd:: set firewall ipv4 input filter rule <1-999999> + icmp type-name <text> +.. cfgcmd:: set firewall ipv4 output filter rule <1-999999> + icmp type-name <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + icmp type-name <text> +.. cfgcmd:: set firewall ipv6 forward filter rule <1-999999> + icmpv6 type-name <text> +.. cfgcmd:: set firewall ipv6 input filter rule <1-999999> + icmpv6 type-name <text> +.. cfgcmd:: set firewall ipv6 output filter rule <1-999999> + icmpv6 type-name <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + icmpv6 type-name <text> Match based on icmp|icmpv6 type-name criteria. Use tab for information about what **type-name** criteria are supported. -.. cfgcmd:: set firewall name <name> rule <1-999999> inbound-interface - <iface> -.. cfgcmd:: set firewall name <name> rule <1-999999> outbound-interface - <iface> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> inbound-interface - <iface> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> outbound-interface - <iface> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + inbound-interface <iface> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + inbound-interface <iface> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + inbound-interface <iface> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + inbound-interface <iface> - Match based on inbound/outbound interface. Wilcard ``*`` can be used. + Match based on inbound interface. Wilcard ``*`` can be used. For example: ``eth2*`` -.. cfgcmd:: set firewall name <name> rule <1-999999> ipsec [match-ipsec - | match-none] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> ipsec [match-ipsec - | match-none] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + outbound-interface <iface> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + outbound-interface <iface> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + outbound-interface <iface> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + outbound-interface <iface> + + Match based on outbound interface. Wilcard ``*`` can be used. + For example: ``eth2*`` + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + ipsec [match-ipsec | match-none] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + ipsec [match-ipsec | match-none] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + ipsec [match-ipsec | match-none] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + ipsec [match-ipsec | match-none] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + ipsec [match-ipsec | match-none] Match based on ipsec criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> limit burst - <0-4294967295> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> limit burst - <0-4294967295> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + limit burst <0-4294967295> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + limit burst <0-4294967295> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + limit burst <0-4294967295> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + limit burst <0-4294967295> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + limit burst <0-4294967295> Match based on the maximum number of packets to allow in excess of rate. -.. cfgcmd:: set firewall name <name> rule <1-999999> limit rate - <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> limit rate - <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + limit rate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + limit rate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + limit rate <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + limit rate <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + limit rate <text> Match based on the maximum average rate, specified as **integer/unit**. For example **5/minutes** -.. cfgcmd:: set firewall name <name> rule <1-999999> packet-length - <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-length - <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> packet-length-exclude - <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-length-exclude - <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + packet-length <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + packet-length <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + packet-length <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + packet-length <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + packet-length <text> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + packet-length-exclude <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + packet-length-exclude <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + packet-length-exclude <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + packet-length-exclude <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + packet-length-exclude <text> Match based on packet length criteria. Multiple values from 1 to 65535 and ranges are supported. -.. cfgcmd:: set firewall name <name> rule <1-999999> packet-type - [broadcast | host | multicast | other] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> packet-type - [broadcast | host | multicast | other] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + packet-type [broadcast | host | multicast | other] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + packet-type [broadcast | host | multicast | other] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + packet-type [broadcast | host | multicast | other] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + packet-type [broadcast | host | multicast | other] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + packet-type [broadcast | host | multicast | other] Match based on packet type criteria. -.. cfgcmd:: set firewall name <name> rule <1-999999> protocol [<text> | - <0-255> | all | tcp_udp] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> protocol [<text> | - <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + protocol [<text> | <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + protocol [<text> | <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + protocol [<text> | <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + protocol [<text> | <0-255> | all | tcp_udp] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + protocol [<text> | <0-255> | all | tcp_udp] Match a protocol criteria. A protocol number or a name which is here defined: ``/etc/protocols``. @@ -668,21 +1099,44 @@ geoip) to keep database and rules updated. .. code-block:: none - set firewall name WAN-IN-v4 rule 10 protocol tcp_udp - set firewall name WAN-IN-v4 rule 11 protocol !tcp_udp - set firewall ipv6-name WAN-IN-v6 rule 10 protocol tcp - -.. cfgcmd:: set firewall name <name> rule <1-999999> recent count <1-255> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent count <1-255> -.. cfgcmd:: set firewall name <name> rule <1-999999> recent time - [second | minute | hour] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent time - [second | minute | hour] + set firewall ipv4 forward fitler rule 10 protocol tcp_udp + set firewall ipv4 forward fitler rule 11 protocol !tcp_udp + set firewall ipv6 input filter rule 10 protocol tcp + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + recent count <1-255> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + recent time [second | minute | hour] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + recent time [second | minute | hour] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + recent time [second | minute | hour] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + recent time [second | minute | hour] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + recent time [second | minute | hour] Match bases on recently seen sources. -.. cfgcmd:: set firewall name <name> rule <1-999999> tcp flags <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> tcp flags <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + tcp flags <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + tcp flags <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + tcp flags <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + tcp flags <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + tcp flags <text> Allowed values fpr TCP flags: ``SYN``, ``ACK``, ``FIN``, ``RST``, ``URG``, ``PSH``, ``ALL`` When specifying more than one flag, flags should be comma @@ -690,82 +1144,125 @@ geoip) to keep database and rules updated. .. code-block:: none - set firewall name WAN-IN-v4 rule 10 tcp flags 'ACK' - set firewall name WAN-IN-v4 rule 12 tcp flags 'SYN' - set firewall name WAN-IN-v4 rule 13 tcp flags 'SYN,!ACK,!FIN,!RST' - -.. cfgcmd:: set firewall name <name> rule <1-999999> state [established | - invalid | new | related] [enable | disable] -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> state [established | - invalid | new | related] [enable | disable] + set firewall ipv4 input filter rule 10 tcp flags 'ACK' + set firewall ipv4 input filter rule 12 tcp flags 'SYN' + set firewall ipv4 input filter rule 13 tcp flags 'SYN,!ACK,!FIN,!RST' + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + state [established | invalid | new | related] [enable | disable] +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + state [established | invalid | new | related] [enable | disable] +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + state [established | invalid | new | related] [enable | disable] +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + state [established | invalid | new | related] [enable | disable] +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + state [established | invalid | new | related] [enable | disable] Match against the state of a packet. -.. cfgcmd:: set firewall name <name> rule <1-999999> time startdate <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time startdate <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> time starttime <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time starttime <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> time stopdate <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time stopdate <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> time stoptime <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time stoptime <text> -.. cfgcmd:: set firewall name <name> rule <1-999999> time weekdays <text> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> time weekdays <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + time startdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + time startdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + time startdate <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + time startdate <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + time startdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + time starttime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + time starttime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + time starttime <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + time starttime <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + time starttime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + time stopdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + time stopdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + time stopdate <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + time stopdate <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + time stopdate <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + time stoptime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + time stoptime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + time stoptime <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + time stoptime <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + time stoptime <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + time weekdays <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + time weekdays <text> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + time weekdays <text> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + time weekdays <text> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + time weekdays <text> Time to match the defined rule. -.. cfgcmd:: set firewall name <name> rule <1-999999> ttl <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv4 forward filter rule <1-999999> + ttl <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv4 input filter rule <1-999999> + ttl <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv4 output filter rule <1-999999> + ttl <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + ttl <eq | gt | lt> <0-255> Match time to live parameter, where 'eq' stands for 'equal'; 'gt' stands for 'greater than', and 'lt' stands for 'less than'. -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> hop-limit <eq | gt | - lt> <0-255> +.. cfgcmd:: set firewall ipv6 forward filter rule <1-999999> + hop-limit <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv6 input filter rule <1-999999> + hop-limit <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv6 output filter rule <1-999999> + hop-limit <eq | gt | lt> <0-255> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + hop-limit <eq | gt | lt> <0-255> Match hop-limit parameter, where 'eq' stands for 'equal'; 'gt' stands for 'greater than', and 'lt' stands for 'less than'. -.. cfgcmd:: set firewall name <name> rule <1-999999> recent count <1-255> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent count <1-255> -.. cfgcmd:: set firewall name <name> rule <1-999999> recent time <second | - minute | hour> -.. cfgcmd:: set firewall ipv6-name <name> rule <1-999999> recent time <second | - minute | hour> +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + recent count <1-255> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + recent count <1-255> + +.. cfgcmd:: set firewall [ipv4 | ipv6] forward filter rule <1-999999> + recent time <second | minute | hour> +.. cfgcmd:: set firewall [ipv4 | ipv6] input filter rule <1-999999> + recent time <second | minute | hour> +.. cfgcmd:: set firewall [ipv4 | ipv6] output filter rule <1-999999> + recent time <second | minute | hour> +.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999> + recent time <second | minute | hour> +.. cfgcmd:: set firewall ipv6 ipv6-name <name> rule <1-999999> + recent time <second | minute | hour> Match when 'count' amount of connections are seen within 'time'. These matching criteria can be used to block brute-force attempts. -*********************************** -Applying a Rule-Set to an Interface -*********************************** - -A Rule-Set can be applied to every interface: - -* ``in``: Ruleset for forwarded packets on an inbound interface -* ``out``: Ruleset for forwarded packets on an outbound interface -* ``local``: Ruleset for packets destined for this router - -.. cfgcmd:: set firewall interface <interface> [in | out | local] [name | - ipv6-name] <rule-set> - - - Here are some examples for applying a rule-set to an interface - - .. code-block:: none - - set firewall interface eth1.100 in name LANv4-IN - set firewall interface eth1.100 out name LANv4-OUT - set firewall interface bond0 in name LANv4-IN - set firewall interface vtun1 in name LANv4-IN - set firewall interface eth2* in name LANv4-IN - - .. note:: - As you can see in the example here, you can assign the same rule-set to - several interfaces. An interface can only have one rule-set per chain. - - .. note:: - You can use wildcard ``*`` to match a group of interfaces. - *********************** Operation-mode Firewall *********************** @@ -779,65 +1276,62 @@ Rule-set overview .. code-block:: none - vyos@vyos:~$ show firewall - - ------------------------ - Firewall Global Settings - ------------------------ - - Firewall state-policy for all IPv4 and Ipv6 traffic - - state action log - ----- ------ --- - invalid accept disabled - established accept disabled - related accept disabled - - ----------------------------- + vyos@vyos:~$ show firewall Rulesets Information - ----------------------------- - -------------------------------------------------------------------------- - IPv4 Firewall "DMZv4-1-IN": - - Active on (eth0,IN) - - rule action proto packets bytes - ---- ------ ----- ------- ----- - 10 accept icmp 0 0 - condition - saddr 10.1.0.0/24 daddr 0.0.0.0/0 LOG enabled - - 10000 drop all 0 0 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 LOG enabled - - -------------------------------------------------------------------------- - IPv4 Firewall "DMZv4-1-OUT": - - Active on (eth0,OUT) - - rule action proto packets bytes - ---- ------ ----- ------- ----- - 10 accept tcp_udp 1 60 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 match-DST-PORT-GROUP DMZ-Ports /* - DMZv4-1-OUT-10 */LOG enabled - 11 accept icmp 1 84 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 /* DMZv4-1-OUT-11 */LOG enabled - - 10000 drop all 6 360 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 LOG enabled - - -------------------------------------------------------------------------- - IPv4 Firewall "LANv4-IN": - - Inactive - Not applied to any interfaces or zones. - - rule action proto packets bytes - ---- ------ ----- ------- ----- - 10 accept all 0 0 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 /* LANv4-IN-10 */ - - 10000 drop all 0 0 - condition - saddr 0.0.0.0/0 daddr 0.0.0.0/0 + --------------------------------- + IPv4 Firewall "forward filter" + + Rule Action Protocol Packets Bytes Conditions + ------- -------- ---------- --------- ------- ----------------------------------------- + 5 jump all 0 0 iifname "eth1" jump NAME_VyOS_MANAGEMENT + 10 jump all 0 0 oifname "eth1" jump NAME_WAN_IN + 15 jump all 0 0 iifname "eth3" jump NAME_WAN_IN + default accept all + + --------------------------------- + IPv4 Firewall "name VyOS_MANAGEMENT" + + Rule Action Protocol Packets Bytes Conditions + ------- -------- ---------- --------- ------- -------------------------------- + 5 accept all 0 0 ct state established accept + 10 drop all 0 0 ct state invalid + 20 accept all 0 0 ip saddr @A_GOOD_GUYS accept + 30 accept all 0 0 ip saddr @N_ENTIRE_RANGE accept + 40 accept all 0 0 ip saddr @A_VyOS_SERVERS accept + 50 accept icmp 0 0 meta l4proto icmp accept + default drop all 0 0 + + --------------------------------- + IPv6 Firewall "forward filter" + + Rule Action Protocol + ------- -------- ---------- + 5 jump all + 10 jump all + 15 jump all + default accept all + + --------------------------------- + IPv6 Firewall "input filter" + + Rule Action Protocol + ------- -------- ---------- + 5 jump all + default accept all + + --------------------------------- + IPv6 Firewall "ipv6_name IPV6-VyOS_MANAGEMENT" + + Rule Action Protocol + ------- -------- ---------- + 5 accept all + 10 drop all + 20 accept all + 30 accept all + 40 accept all + 50 accept ipv6-icmp + default drop all .. opcmd:: show firewall summary @@ -845,54 +1339,81 @@ Rule-set overview .. code-block:: none - vyos@vyos:~$ show firewall summary + vyos@vyos:~$ show firewall summary + Ruleset Summary - ------------------------ - Firewall Global Settings - ------------------------ + IPv6 Ruleset: - Firewall state-policy for all IPv4 and Ipv6 traffic + Ruleset Hook Ruleset Priority Description + -------------- -------------------- ------------------------- + forward filter + input filter + ipv6_name IPV6-VyOS_MANAGEMENT + ipv6_name IPV6-WAN_IN PUBLIC_INTERNET - state action log - ----- ------ --- - invalid accept disabled - related accept disabled - established accept disabled + IPv4 Ruleset: - ------------------------ - Firewall Rulesets - ------------------------ + Ruleset Hook Ruleset Priority Description + -------------- ------------------ ------------------------- + forward filter + input filter + name VyOS_MANAGEMENT + name WAN_IN PUBLIC_INTERNET - IPv4 name: + Firewall Groups - Rule-set name Description References - ------------- ----------- ---------- - DMZv4-1-OUT (eth0,OUT) - DMZv4-1-IN (eth0,IN) + Name Type References Members + ----------------------- ------------------ ----------------------- ---------------- + PBX address_group WAN_IN-100 198.51.100.77 + SERVERS address_group WAN_IN-110 192.0.2.10 + WAN_IN-111 192.0.2.11 + WAN_IN-112 192.0.2.12 + WAN_IN-120 + WAN_IN-121 + WAN_IN-122 + SUPPORT address_group VyOS_MANAGEMENT-20 192.168.1.2 + WAN_IN-20 + PHONE_VPN_SERVERS address_group WAN_IN-160 10.6.32.2 + PINGABLE_ADRESSES address_group WAN_IN-170 192.168.5.2 + WAN_IN-171 + PBX ipv6_address_group IPV6-WAN_IN-100 2001:db8::1 + SERVERS ipv6_address_group IPV6-WAN_IN-110 2001:db8::2 + IPV6-WAN_IN-111 2001:db8::3 + IPV6-WAN_IN-112 2001:db8::4 + IPV6-WAN_IN-120 + IPV6-WAN_IN-121 + IPV6-WAN_IN-122 + SUPPORT ipv6_address_group IPV6-VyOS_MANAGEMENT-20 2001:db8::5 + IPV6-WAN_IN-20 + + +.. opcmd:: show firewall [ipv4 | ipv6] [forward | input | output] filter + +.. opcmd:: show firewall ipv4 name <name> + +.. opcmd:: show firewall ipv6 ipv6-name <name> - ------------------------ - Firewall Groups - ------------------------ + This command will give an overview of a single rule-set. - Port Groups: + .. code-block:: none - Group name Description References - ---------- ----------- ---------- - DMZ-Ports DMZv4-1-OUT-10-destination + vyos@vyos:~$ show firewall ipv4 input filter + Ruleset Information - Network Groups: + --------------------------------- + IPv4 Firewall "input filter" - Group name Description References - ---------- ----------- ---------- - LANv4 LANv4-IN-10-source, - DMZv4-1-OUT-10-source, - DMZv4-1-OUT-11-source + Rule Action Protocol Packets Bytes Conditions + ------- -------- ---------- --------- ------- ----------------------------------------- + 5 jump all 0 0 iifname "eth2" jump NAME_VyOS_MANAGEMENT + default accept all -.. opcmd:: show firewall statistics +.. opcmd:: show firewall [ipv4 | ipv6] [forward | input | output] + filter rule <1-999999> - This will show you a statistic of all rule-sets since the last boot. +.. opcmd:: show firewall ipv4 name <name> rule <1-999999> -.. opcmd:: show firewall [name | ipv6name] <name> rule <1-999999> +.. opcmd:: show firewall ipv6 ipv6-name <name> rule <1-999999> This command will give an overview of a rule in a single rule-set @@ -903,56 +1424,20 @@ Rule-set overview .. code-block:: none - vyos@vyos:~$ show firewall group DMZ-Ports - Name : DMZ-Ports - Type : port - References : none - Members : - 80 - 443 - 8080 - 8443 - - vyos@vyos:~$ show firewall group LANv4 - Name : LANv4 - Type : network - References : LANv4-IN-10-source - Members : - 10.10.0.0/16 - -.. opcmd:: show firewall [name | ipv6name] <name> - - This command will give an overview of a single rule-set. - -.. opcmd:: show firewall [name | ipv6name] <name> statistics - - This will show you a rule-set statistic since the last boot. - -.. opcmd:: show firewall [name | ipv6name] <name> rule <1-999999> - - This command will give an overview of a rule in a single rule-set. - - -Zone-Policy Overview -==================== - -.. opcmd:: show zone-policy zone <name> - - Use this command to get an overview of a zone. - - .. code-block:: none + vyos@vyos:~$ show firewall group LAN + Firewall Groups - vyos@vyos:~$ show zone-policy zone DMZ - ------------------- - Name: DMZ + Name Type References Members + ------------ ------------------ ----------------------- ---------------- + LAN ipv6_network_group IPV6-VyOS_MANAGEMENT-30 2001:db8::0/64 + IPV6-WAN_IN-30 + LAN network_group VyOS_MANAGEMENT-30 192.168.200.0/24 + WAN_IN-30 - Interfaces: eth0 eth1 - From Zone: - name firewall - ---- -------- - LAN DMZv4-1-OUT +.. opcmd:: show firewall statistics + This will show you a statistic of all rule-sets since the last boot. Show Firewall log ================= @@ -967,78 +1452,51 @@ Show Firewall log For example: ``grep '10.10.0.10' /var/log/messages`` - Example Partial Config ====================== .. code-block:: none firewall { - interface eth0 { - in { - name FROM-INTERNET - } - } - all-ping enable - broadcast-ping disable - config-trap disable - group { - network-group BAD-NETWORKS { - network 198.51.100.0/24 - network 203.0.113.0/24 - } - network-group GOOD-NETWORKS { - network 192.0.2.0/24 - } - port-group BAD-PORTS { - port 65535 - } - } - name FROM-INTERNET { - default-action accept - description "From the Internet" - rule 10 { - action accept - description "Authorized Networks" - protocol all - source { - group { - network-group GOOD-NETWORKS - } - } - } - rule 11 { - action drop - description "Bad Networks" - protocol all - source { - group { - network-group BAD-NETWORKS - } - } - } - rule 30 { - action drop - description "BAD PORTS" - destination { - group { - port-group BAD-PORTS - } - } - log enable - protocol all - } - } - } - interfaces { - ethernet eth1 { - address dhcp - description OUTSIDE - duplex auto - } + group { + network-group BAD-NETWORKS { + network 198.51.100.0/24 + network 203.0.113.0/24 + } + network-group GOOD-NETWORKS { + network 192.0.2.0/24 + } + port-group BAD-PORTS { + port 65535 + } + } + ipv4 { + forward { + filter { + default-action accept + rule 5 { + action accept + source { + group { + network-group GOOD-NETWORKS + } + } + } + rule 10 { + action drop + description "Bad Networks" + protocol all + source { + group { + network-group BAD-NETWORKS + } + } + } + } + } + } } - Update geoip database ===================== diff --git a/docs/configuration/firewall/index.rst b/docs/configuration/firewall/index.rst index dfafa606..94ae6ca5 100644 --- a/docs/configuration/firewall/index.rst +++ b/docs/configuration/firewall/index.rst @@ -2,9 +2,23 @@ Firewall ######## +Starting from VyOS 1.4-rolling-202308040557, a new firewall structure +can be found on all vyos instalations. Documentation for most new firewall +cli can be found here: + .. toctree:: :maxdepth: 1 :includehidden: general + +Also, for those who haven't update to newer version, legacy documentation is +still present and valid for all sagitta version prior to VyOS +1.4-rolling-202308040557: + +.. toctree:: + :maxdepth: 1 + :includehidden: + + general-legacy zone diff --git a/docs/configuration/firewall/zone.rst b/docs/configuration/firewall/zone.rst index b27e02b9..403de912 100644 --- a/docs/configuration/firewall/zone.rst +++ b/docs/configuration/firewall/zone.rst @@ -6,6 +6,10 @@ Zone Based Firewall ################### +.. note:: **Important note:** + This documentation is valid only for VyOS Sagitta prior to + 1.4-rolling-YYYYMMDDHHmm + In zone-based policy, interfaces are assigned to zones, and inspection policy is applied to traffic moving between the zones and acted on according to firewall rules. A Zone is a group of interfaces that have similar functions or |