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Diffstat (limited to 'docs/configuration/system/conntrack.rst')
| -rw-r--r-- | docs/configuration/system/conntrack.rst | 149 |
1 files changed, 93 insertions, 56 deletions
diff --git a/docs/configuration/system/conntrack.rst b/docs/configuration/system/conntrack.rst index 68a4f2b8..6ed5fef7 100644 --- a/docs/configuration/system/conntrack.rst +++ b/docs/configuration/system/conntrack.rst @@ -46,9 +46,23 @@ Configure | Use `delete system conntrack modules` to deactive all modules. | Or, for example ftp, `delete system conntrack modules ftp`. +.. cfgcmd:: set system conntrack tcp half-open-connections <1-21474836> + :defaultvalue: -Define Conection Timeouts -========================= + Set the maximum number of TCP half-open connections. + +.. cfgcmd:: set system conntrack tcp loose <enable | disable> + :defaultvalue: + + Policy to track previously established connections. + +.. cfgcmd:: set system conntrack tcp max-retrans <1-2147483647> + :defaultvalue: + + Set the number of TCP maximum retransmit attempts. + +Contrack Timeouts +================= VyOS supports setting timeouts for connections according to the connection type. You can set timeout values for generic connections, for ICMP @@ -82,34 +96,48 @@ states. Set the timeout in secounds for a protocol or state. - You can also define custom timeout values to apply to a specific subset of connections, based on a packet and flow selector. To do this, you need to create a rule defining the packet and flow selector. -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> description <test> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + description <test> Set a rule description. +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + destination address <ip-address> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + source address <ip-address> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> destination address <ip-address> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> source address <ip-address> - - set a destination and/or source address. Accepted input: + Set a destination and/or source address. Accepted input for ipv4: .. code-block:: none - <x.x.x.x> IP address to match - <x.x.x.x/x> Subnet to match - <x.x.x.x>-<x.x.x.x> - IP range to match - !<x.x.x.x> Match everything except the specified address - !<x.x.x.x/x> Match everything except the specified subnet - !<x.x.x.x>-<x.x.x.x> - Match everything except the specified range - -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> destination port <value> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> source port <value> + set system conntrack timeout custom ipv4 rule <1-999999> [source | destination] address + Possible completions: + <x.x.x.x> IPv4 address to match + <x.x.x.x/x> IPv4 prefix to match + <x.x.x.x>-<x.x.x.x> IPv4 address range to match + !<x.x.x.x> Match everything except the specified address + !<x.x.x.x/x> Match everything except the specified prefix + !<x.x.x.x>-<x.x.x.x> Match everything except the specified range + + set system conntrack timeout custom ipv6 rule <1-999999> [source | destination] address + Possible completions: + <h:h:h:h:h:h:h:h> IP address to match + <h:h:h:h:h:h:h:h/x> Subnet to match + <h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h> + IP range to match + !<h:h:h:h:h:h:h:h> Match everything except the specified address + !<h:h:h:h:h:h:h:h/x> Match everything except the specified prefix + !<h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h> + Match everything except the specified range + +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + destination port <value> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + source port <value> Set a destination and/or source port. Accepted input: @@ -123,49 +151,58 @@ create a rule defining the packet and flow selector. The whole list can also be "negated" using '!'. For example: `!22,telnet,http,123,1001-1005`` - - -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol icmp <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol other <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp close <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp close-wait <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp established <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp fin-wait <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp last-ack <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp syn-recv <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp syn-sent <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol tcp time-wait <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol udp other <1-21474836> -.. cfgcmd:: set system conntrack timeout custom rule <1-9999> protocol udp stream <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp close <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp close-wait <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp established <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp fin-wait <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp last-ack <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp syn-recv <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp syn-sent <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol tcp time-wait <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol udp replied <1-21474836> +.. cfgcmd:: set system conntrack timeout custom [ipv4 | ipv6] rule <1-999999> + protocol udp unreplied <1-21474836> Set the timeout in secounds for a protocol or state in a custom rule. - -.. cfgcmd:: set system conntrack tcp half-open-connections <1-21474836> - :defaultvalue: - - Set the maximum number of TCP half-open connections. - -.. cfgcmd:: set system conntrack tcp loose <enable | disable> - :defaultvalue: - - Policy to track previously established connections. - -.. cfgcmd:: set system conntrack tcp max-retrans <1-2147483647> - :defaultvalue: - - Set the number of TCP maximum retransmit attempts. - -.. cfgcmd:: set system conntrack ignore rule <1-9999> description <text> -.. cfgcmd:: set system conntrack ignore rule <1-9999> destination address <ip-address> -.. cfgcmd:: set system conntrack ignore rule <1-9999> destination port <port> -.. cfgcmd:: set system conntrack ignore rule <1-9999> inbound-interface <interface> -.. cfgcmd:: set system conntrack ignore rule <1-9999> protocol <protocol> -.. cfgcmd:: set system conntrack ignore rule <1-9999> source address <ip-address> -.. cfgcmd:: set system conntrack ignore rule <1-9999> source port <port> +Conntrack ignore rules +====================== Customized ignore rules, based on a packet and flow selector. +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + description <text> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + destination address <ip-address> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + destination port <port> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + inbound-interface <interface> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + protocol <protocol> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + source address <ip-address> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + source port <port> +.. cfgcmd:: set system conntrack ignore [ipv4 | ipv6] rule <1-999999> + tcp flags [not] <text> + + Allowed values fpr TCP flags: ``ack``, ``cwr``, ``ecn``, ``fin``, ``psh``, + ``rst``, ``syn`` and ``urg``. Multiple values are supported, and for + inverted selection use ``not``, as shown in the example. + +Conntrack log +============= + .. cfgcmd:: set system conntrack log icmp destroy .. cfgcmd:: set system conntrack log icmp new .. cfgcmd:: set system conntrack log icmp update |