Address review of the port 8090 firewall: - Insert the three MealQuest rules at the top of DOCKER-USER, ahead of other projects' rules. Each run deletes every rule tagged "mealquest-firewall" and re-inserts them at positions 1-3, so re-runs restore the order and never duplicate. - Scope the match to MealQuest's published address with --ctorigdst 10.60.1.14, so outbound container connections to a remote :8090 are not matched. - Drop the docker.service ExecStartPost drop-in, which made a firewall error fatal to the shared Docker daemon. The unit is now PartOf= and WantedBy= docker.service: it re-runs on every Docker start or restart and fails visibly on its own without failing docker.service. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
30 lines
1.2 KiB
Bash
Executable File
30 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# Restrict the MealQuest published host port (10.60.1.14:8090) to Traefik
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# (10.60.1.33) and the Docker host itself (10.60.1.14); drop every other
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# source.
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#
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# DOCKER-USER runs after Docker's DNAT, so the destination there is the
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# container address and port, not the published ones. Match the original
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# destination address and port with conntrack instead of -d/--dport.
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#
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# The rules must sit at the top of DOCKER-USER, ahead of any other project's
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# rules (an earlier RETURN or DROP would decide MealQuest traffic first).
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# Every run deletes all rules tagged with the mealquest-firewall comment and
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# re-inserts them at positions 1-3, so re-runs leave the same ordered rules
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# and no duplicates. Installed as /usr/local/sbin/mealquest-firewall.
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set -eu
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tag="-m comment --comment mealquest-firewall"
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match="-m conntrack --ctorigdst 10.60.1.14 --ctorigdstport 8090 --ctdir ORIGINAL"
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rules=$(iptables -w -S DOCKER-USER)
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printf '%s\n' "$rules" | while read -r _ chain spec; do
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case " $spec " in
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*" --comment mealquest-firewall "*) iptables -w -D "$chain" $spec ;;
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esac
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done
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iptables -w -I DOCKER-USER 1 -s 10.60.1.33/32 $match $tag -j RETURN
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iptables -w -I DOCKER-USER 2 -s 10.60.1.14/32 $match $tag -j RETURN
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iptables -w -I DOCKER-USER 3 $match $tag -j DROP
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