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T5541: firewall zone: re add firewall zone-base firewall
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enables log capabilities for default-action in base chains. And of course, add option for enabling log for default-action
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A commit that removes `firewall bridge` will delete the table and not re-create it. Therefore any further firewall commit will fail trying to delete the non-existent bridge table. This commit ensures the table is always present (even if empty) to ensure successful commit.
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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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firewall, nat, nat66
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When rebasing https://github.com/vyos/vyos-1x/pull/2062, some additional
lines are mistakenly included.
https://github.com/vyos/vyos-1x/commit/45cfd569119b66abd2f0dfb954042b57921881bd
has removed the extra `}`, but the `{{ group_tmpl.groups(group, True)
}}` line needs to be removed as well.
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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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T4072: add firewall bridge filtering.
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forward chain and few matchers. Should be extended in the future.
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- Migrate IPv4 source-validation to nftables
- Interface source-validation value takes priority, fallback to global value
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firewall ipv6 name ...> . Also fix some unexpected behaviour with geoip.
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that contains fqnd and/or geo-ip in base chains. Fix mig script
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scripts and src firewall
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`fqdn` node
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When log-level was introduced node `state-policy x log` was removed without migrator. This commit adds it back and improves log handling.
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firewall node
* Refactor firewall and zone-policy rule creation and cleanup
* Migrate interface firewall values to `firewall interfaces <name> <direction> name/ipv6-name <name>`
* Remove `firewall-interface.py` conf script
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Ability to set static NAT (one-to-one) in one rule
set nat static rule 10 destination address '203.0.113.0/24'
set nat static rule 10 inbound-interface 'eth0'
set nat static rule 10 translation address '192.0.2.0/24'
It will be enough for PREROUTING and POSTROUTING rules
Use a separate table 'vyos_static_nat' as SRC/DST rules and
STATIC rules can have the same rule number
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* Refactor nftables clean-up code
* Adds policy route test for using firewall groups
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Domain group allows to filter addresses by domain main
Resolved addresses as elements are stored to named "nft set"
that used in the nftables rules
Also added a dynamic "resolver" systemd daemon
vyos-domain-group-resolve.service which starts python script
for the domain-group addresses resolving by timeout 300 sec
set firewall group domain-group DOMAINS address 'example.com'
set firewall group domain-group DOMAINS address 'example.org'
set firewall name FOO rule 10 action 'drop'
set firewall name FOO rule 10 source group domain-group 'DOMAINS'
set interfaces ethernet eth0 firewall local name 'FOO'
nft list table ip filter
table ip filter {
set DOMAINS {
type ipv4_addr
flags interval
elements = { 192.0.2.1, 192.0.2.85,
203.0.113.55, 203.0.113.58 }
}
chain NAME_FOO {
ip saddr @DOMAINS counter packets 0 bytes 0 drop comment "FOO-10"
counter packets 0 bytes 0 return comment "FOO default-action accept"
}
}
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