miaou-server/templates/nftables/lxd.table.j2

table inet lxd {
chain pstrt.lxdbr0 {
type nat hook postrouting priority srcnat; policy accept;

{%- if target != 'prod' %}
# BLOCK SMTP PORTS
tcp dport { 25, 465, 587 } ip saddr {{ firewall.bridge_subnet }} {%- if firewall.container_mail_passthrough %} ip saddr
!= {{ env.ip_mail_passthrough }} {% endif %} log prefix "Drop SMTP away from container: " drop
{% endif -%}

ip saddr {{ firewall.bridge_subnet }} ip daddr != {{ firewall.bridge_subnet }} masquerade
}

chain fwd.lxdbr0 {
type filter hook forward priority filter; policy accept;
ip version 4 oifname "lxdbr0" accept
ip version 4 iifname "lxdbr0" accept
}

chain in.lxdbr0 {
type filter hook input priority filter; policy accept;
iifname "lxdbr0" tcp dport 53 accept
iifname "lxdbr0" udp dport 53 accept
iifname "lxdbr0" icmp type { destination-unreachable, time-exceeded, parameter-problem } accept
iifname "lxdbr0" udp dport 67 accept
}

chain out.lxdbr0 {
type filter hook output priority filter; policy accept;
oifname "lxdbr0" tcp sport 53 accept
oifname "lxdbr0" udp sport 53 accept
oifname "lxdbr0" icmp type { destination-unreachable, time-exceeded, parameter-problem } accept
oifname "lxdbr0" udp sport 67 accept
}
}