Files
ilnmors-homelab/config/node/vmm/nftables.conf.j2
2026-03-15 04:41:02 +09:00

27 lines
1.1 KiB
Django/Jinja

#!/usr/sbin/nft -f
# Convention
# iifname oifname saddr daddr proto dport ct state action / Ellipsis if you can something
flush ruleset
define HOSTS4_CONSOLE = { {{ hostvars['fw']['network4']['console'].values() | join(', ') }} }
define HOSTS6_CONSOLE = { {{ hostvars['fw']['network6']['console'].values() | join(', ') }} }
define PORTS_SSH = 22
table inet filter {
chain input {
type filter hook input priority 0; policy drop;
ct state invalid drop comment "deny invalid connection"
ct state established, related accept comment "allow all connection already existing"
iifname "lo" accept comment "allow local connection"
meta l4proto { icmp, icmpv6 } accept comment "allow icmp connection: > VMM"
ip saddr $HOSTS4_CONSOLE tcp dport $PORTS_SSH accept comment "allow ipv4 ssh connection: CONSOLE > VMM"
ip6 saddr $HOSTS6_CONSOLE tcp dport $PORTS_SSH accept comment "allow ipv6 ssh connection: CONSOLE > VMM"
}
chain forward {
type filter hook forward priority 0; policy drop;
}
chain output {
type filter hook output priority 0; policy accept;
}
}