mirror of
https://github.com/kevinveenbirkenbach/computer-playbook.git
synced 2026-11-06 10:59:59 +00:00
kevinveenbirkenbachandClaude Opus 5
bf32f57b85
svc-net-tor rendered its own guard script, its own unit and its own handler, and hooked the rules into DOCKER-USER with an insert, because a rule appended to a chain docker owns lands behind the RETURN docker puts there. The script flushed its chain and refilled it rule by rule, so the boundary was gone for the duration of the refill. A role that needs packet filter rules now writes templates/nftables.conf.j2 declaring its own table and includes svc-net-firewall, which renders it to /etc/nftables.d/<role>.conf, rejects it with nft -c, loads it, reads the table back and refuses one that carries no chain. Deployed on its own the role installs nftables and the ruleset that loads every fragment at boot. That ruleset is a distribution decision, so its path follows os_family: RedHat reads /etc/sysconfig/nftables.conf, the others /etc/nftables.conf. The unit is only enabled, never started, because on Debian its ExecStop flushes the whole ruleset, docker's tables included. One table per role removes the shared path: a fragment replaces its own table and touches no other, and docker never touches either. nft -f on an existing table merges, so each fragment creates, deletes and redeclares its table in one transaction. The tests load every fragment twice into a throwaway network namespace and require the listing to match, because a merging fragment loads twice without error and shows up only as a duplicated rule. The tor guard now applies in both deploy modes. It was pinned to swarm while torrc binds TransPort and DNSPort on the bridge address in compose too, so on a single-host install those ports answered every on-link neighbour. The guard drops rather than admits, so nothing short-circuits another table, and ip saddr carries an implicit ipv4 dependency, which leaves the ipv6 exposure exactly where the iptables rules left it. svc-net-tor reads its own chain back and refuses a guard that drops nothing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
9 lines
92 B
YAML
9 lines
92 B
YAML
---
|
|
nftables:
|
|
Archlinux:
|
|
- nftables
|
|
Debian:
|
|
- nftables
|
|
RedHat:
|
|
- nftables
|