hosts/aubergine/networking/nftables.nix

   1 { pkgs, lib, config, hosts, ... }:
   2 let
   3   inherit (config.users) users;
   4 in
   5 {
   6 networking.firewall.enable = false;
   7 security.lockKernelModules = false;
   8 systemd.services.disable-kernel-module-loading.after = [ "nftables.service" ];
   9 # echo -e "$(nix eval hosts.aubergine.config.networking.nftables.ruleset)"
  10 # nft list ruleset
  11 networking.nftables = {
  12   enable = true;
  13   ruleset = ''
  14     table inet filter {
  15       chain input-lan {
  16         meta l4proto { udp, tcp } th dport domain counter accept comment "DNS"
  17         meta l4proto { udp, tcp } th dport bootps counter accept comment "DHCP"
  18         tcp dport ssh counter accept comment "SSH"
  19         udp dport 60000-61000 counter accept comment "Mosh"
  20       }
  21       chain input-net {
  22         jump check-public
  23       }
  24       chain input-intra {
  25         tcp dport ssh counter accept comment "SSH"
  26         udp dport 60000-61000 counter accept comment "Mosh"
  27       }
  28
  29       chain output-lan {
  30         tcp dport { ssh, 2222 } counter accept comment "SSH"
  31         counter accept
  32       }
  33       chain output-net {
  34         tcp dport { ssh, 2222 } counter accept comment "SSH"
  35         udp dport 60000-61000 counter accept comment "Mosh"
  36         tcp dport { http, https } counter accept comment "HTTP"
  37         udp dport ntp skuid ${users.systemd-timesync.name} counter accept comment "NTP"
  38         meta l4proto { udp, tcp } skuid dnscrypt-proxy2 counter accept comment "dnscrypt-proxy2"
  39         tcp dport git counter accept comment "Git"
  40       }
  41       chain output-intra {
  42         tcp dport { ssh, 2222 } counter accept comment "SSH"
  43         udp dport 60001-60010 counter accept comment "Mosh"
  44         tcp dport { http, https } counter accept comment "HTTP"
  45         tcp dport git counter accept comment "Git"
  46       }
  47     }
  48   '';
  49 };
  50 }