rarias/jungle
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Allow traffic from docker to enter port 23080

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Before:

  hut% sudo docker run -it --rm alpine /bin/ash -xc 'true | nc -w 3 -v 10.0.40.7 23080'
  + true
  + nc -w 3 -v 10.0.40.7 23080
  nc: 10.0.40.7 (10.0.40.7:23080): Operation timed out

After:

  hut% sudo docker run -it --rm alpine /bin/ash -xc 'true | nc -w 3 -v 10.0.40.7 23080'
  + true
  + nc -w 3 -v 10.0.40.7 23080
  10.0.40.7 (10.0.40.7:23080) open

Fixes: #94
Reviewed-by: Aleix Boné <abonerib@bsc.es>
This commit is contained in:
Rodrigo Arias 2025-04-15 12:17:00 +02:00
parent 71ae7fb585
commit e8c309f584
1 changed files with 3 additions and 1 deletions
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4
m/hut/gitlab-runner.nix
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@ -97,12 +97,14 @@
};
};
# DOCKER* chains are useless, override at FORWARD
# DOCKER* chains are useless, override at FORWARD and nixos-fw
networking.firewall.extraCommands = ''
# Allow docker to use our proxy
iptables -I FORWARD 1 -p tcp -i docker0 -d hut --dport 23080 -j nixos-fw-accept
# Block anything else coming from docker
iptables -I FORWARD 2 -p all -i docker0 -j nixos-fw-log-refuse
# Allow incoming traffic from docker to 23080
iptables -A nixos-fw -p tcp -i docker0 -d hut --dport 23080 -j ACCEPT
'';
#systemd.services.gitlab-runner.serviceConfig.Shell = "${pkgs.bash}/bin/bash";