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Add ability to SYNPROXY connections
It is useful to protect against TCP SYN flood attacks and port-scanners
set firewall global-options syn-cookies 'enable'
set firewall ipv4 input filter rule 10 action 'synproxy'
set firewall ipv4 input filter rule 10 destination port '22'
set firewall ipv4 input filter rule 10 inbound-interface interface-name 'eth1'
set firewall ipv4 input filter rule 10 protocol 'tcp'
set firewall ipv4 input filter rule 10 synproxy tcp mss '1460'
set firewall ipv4 input filter rule 10 synproxy tcp window-scale '7'
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A `backup` server can be defined to take over in the case of all other
backends failing
set load-balancing reverse-proxy backend <tag> server <tag> address '192.0.2.3'
set load-balancing reverse-proxy backend <tag> server <tag> port '8883'
set load-balancing reverse-proxy backend <tag> server <tag> backup
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Also updates flowtable smoketest to verify conntrack enabled
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bgp: T5596: add new features from FRR 9
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isis: T5597: add new features from FRR 9
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supports HW flowtable offload
- Add required offload setting for interfaces + flowtable offload (hw-tc-offload)
- Verification of interface support for hardware offloaded flowtables
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`set firewall flowtable <name> interface <ifname>`
`set firewall flowtable <name> offload [software|hardware]`
`set firewall [ipv4|ipv6] forward filter rule N action offload`
`set firewall [ipv4|ipv6] forward filter rule N offload-target <name>`
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* Add support for IS-IS advertise-high-metrics
set protocols isis advertise-high-metrics
* Add support for IS-IS advertise-passive-only
set protocols isis advertise-passive-only
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* Add BGP Software Version capability (draft-abraitis-bgp-version-capability)
set protocols bgp neighbor 192.0.2.1 capability software-version
* Add BGP neighbor path-attribute treat-as-withdraw command
set protocols bgp neighbor 192.0.2.1 path-attribute treat-as-withdraw
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T5590: firewall log rule: fix order which rule are processed
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conntrack: T5571: Refactor conntrack using vyos.configdep
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- Moves MSS node out of `tcp-flags.xml.i` and into `tcp-mss.xml.i`
- Update smoketest to verify TCP flag matching
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should be added at the end of the rule, after all matchers and befora action. Also change 2 lines in policy_route smoketest, which suddenly wasn't working as expected
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firewall, nat, nat66
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After commit 0ccbbca01b ("openvpn: T3214: specify nopool on --server line only
if needed") that removed the net30 option and nopool smoketests needed a fix.
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T5561: nat: inbound|outbound interface should not be mandatory
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T4502: firewall: Add software flow offload using flowtable
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while configuring dNAT|sNAT rule
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T5518: Add basic MLD support
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Cleanup nets for the smoketest load-balancing
Remove deleting container interfaces from default netns as those
interfaces leave inly in netns.
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The following commands will enable nftables flowtable offload on interfaces eth0 eth1:
```
set firewall global-options flow-offload software interface <name>
set firewall global-options flow-offload hardware interface <name>
```
Generated nftables rules:
```
table inet vyos_offload {
flowtable VYOS_FLOWTABLE_software {
hook ingress priority filter - 1; devices = { eth0, eth1, eth2, eth3 };
counter
}
chain VYOS_OFFLOAD_software {
type filter hook forward priority filter - 1; policy accept;
ct state { established, related } meta l4proto { tcp, udp } flow add @VYOS_FLOWTABLE_software
}
}
```
Use this option to count packets and bytes for each offloaded flow:
```
set system conntrack flow-accounting
```
To verify a connection is offloaded, run
```
cat /proc/net/nf_conntrack|grep OFFLOAD
```
This PR follows firewalld's implementation: https://github.com/firewalld/firewalld/blob/e748b97787d685d0ca93f58e8d4292e87d3f0da6/src/firewall/core/nftables.py#L590
A good introduction to nftables flowtable: https://thermalcircle.de/doku.php?id=blog:linux:flowtables_1_a_netfilter_nftables_fastpath
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FRR supports a new way of configuring VLAN-to-VNI mappings for EVPN-VXLAN, when
working with the Linux kernel. In this new way, the mapping of a VLAN to a VNI
is configured against a container VXLAN interface which is referred to as a
'Single VXLAN device (SVD)'.
Multiple VLAN to VNI mappings can be configured against the same SVD. This
allows for a significant scaling of the number of VNIs since a separate VXLAN
interface is no longer required for each VNI.
Sample configuration of SVD with VLAN to VNI mappings is shown below.
set interfaces bridge br0 member interface vxlan0
set interfaces vxlan vxlan0 external
set interfaces vxlan vxlan0 source-interface 'dum0'
set interfaces vxlan vxlan0 vlan-to-vni 10 vni '10010'
set interfaces vxlan vxlan0 vlan-to-vni 11 vni '10011'
set interfaces vxlan vxlan0 vlan-to-vni 30 vni '10030'
set interfaces vxlan vxlan0 vlan-to-vni 31 vni '10031'
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T4072: add firewall bridge filtering.
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Currently VyOS has `protocol igmp` option to enable IGMP querier and reports through FRR's pimd.
I would like to add support for IPv6 as well since FRR's IPv6 multicast functionality has significantly improved.
Enabling both MLD and IGMP on a VyOS router will allow us to turn on multicast snooping on layer-3 switches in dual-stack networks.
Example commands:
```
// Enable on interface eth0
set protocols pim6 interface eth0
// Explicitly join multicast group ff18::1234 on interface eth1
set protocols pim6 interface eth1 mld join ff18::1234
// Explicitly join source-specific multicast group ff38::5678 with source address 2001:db8::1 on interface eth1
set protocols pim6 interface eth1 mld join ff38::5678 source 2001:db8::1
```
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forward chain and few matchers. Should be extended in the future.
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results
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conntrack: T4309: T4903: Refactor `system conntrack ignore`, add IPv6 support and firewall groups
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- Migrate IPv4 source-validation to nftables
- Interface source-validation value takes priority, fallback to global value
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add IPv6 support and firewall groups
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Commit 6896aabb6 ("wireless: T5540: fix VHT capability settings for 802.11ac"
changed how the VHT channel-sidth is configured in hostapd - but smoketests
did not get adjusted.
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Configuring "set system ip protocol ospf|bgp route-map foo" and commit it
installs the route-map into FRR. Removing the CLI configuration "delete system
ip protocol" does not remove the route-map from FRR - it stays active.
This commit adds the fix and appropriate smoketests extenstion.
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wifi: T5491: allow white-/blacklisting station MAC addresses for security
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T5448: Add configuration host-name for zabbix-agent
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T5472: nat redirect: allow redirection without defining redirected port
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T5450: allow inverted matcher for interface and interface-group
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firewall cli
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Ability to configure host-name for zabbix-agent
set service monitoring zabbix-agent host-name 'r-vyos'
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T5447: Initial support for MACsec static keys
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