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Viktor Barzin df332b59e6 break-glass SSH: drop port-knock for exposed key-only :52222; version host config 
Viktor got locked out of the break-glass path (forgot the port-knock setup) and
deleted the edge-router forwards, then asked to review and redesign it from
scratch.

Root cause of the lockout: the knock added no real security (key-only SSH is
already brute-force-proof) and its only benefit — hiding the port — came at the
cost of a circular dependency. The knock sequence lived only in in-cluster
Vault, which is unreachable in the exact away/cold scenario break-glass exists
for. So the unlock secret was unavailable precisely when needed.

New model (self-contained, nothing to remember): plain key-only SSH on the
Proxmox host's :52222, openly reachable. The edge router forwards WAN tcp/52222
-> 192.168.1.127:52222 (external port MUST equal internal on the TP-Link AX6000
- it rejects remaps; port 22 itself is reserved). The exposed port trusts only a
dedicated break-glass key via `Match LocalPort` (a leak of any other root key
does not grant internet access), rate-limited (iptables hashlimit) + fail2ban.

- Removed knockd (package + config) and the legacy Synology SSH forward
  (ext 3333 -> .13:22, a needless WAN exposure the original plan wanted gone).
- Fixed the fail2ban jail for Debian 13 (auth logs under sshd-session, not sshd
  - the stock journalmatch silently never banned).
- Versioned the host config in scripts/ (it was applied ad-hoc, never committed)
  and recorded the deliberate Wave-1 "no public-IP" exception in security.md +
  .claude/CLAUDE.md. Superseded the 2026-05-30 port-knock design docs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-11 18:23:39 +00:00
..
server_safe_poweroff fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-dispatch t3: connection logging across the path for drop attribution 2026-06-11 13:48:10 +00:00
workstation workstation: lean managed-settings claudeMd — org red-lines + pointers [ci skip] 2026-06-11 18:02:43 +00:00
apply-mbps-caps.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
apply-mbps-caps.sh apply-mbps-caps: compare normalized option sets (true idempotency) + devvm I/O-stall post-mortem [ci skip] 2026-06-11 18:00:08 +00:00
apply-mbps-caps.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
breakglass-firewall.sh break-glass SSH: drop port-knock for exposed key-only :52222; version host config 2026-06-11 18:23:39 +00:00
check-ingress-auth-comments.py fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
cluster_healthcheck.sh technitium: mirror mail-auth records into internal zone; fix redfish check [ci skip] 2026-06-10 17:46:37 +00:00
cluster_manager.py fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
daily-backup.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
daily-backup.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
daily-backup.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
devvm-promtail.service t3: connection logging across the path for drop attribution 2026-06-11 13:48:10 +00:00
devvm-promtail.yaml t3: connection logging across the path for drop attribution 2026-06-11 13:48:10 +00:00
extend_vm_storage.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
fail2ban-breakglass-sshd.local break-glass SSH: drop port-knock for exposed key-only :52222; version host config 2026-06-11 18:23:39 +00:00
fan-control.env.example fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
fan-control.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
fan-control.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
forgejo-migrate-orphan-images.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
frigate-bulk-classify.js fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
frigate-inspect.mjs fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
gen_service_stacks.py fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
graceful-db-maintenance.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
image_pull.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
image_pull_remote.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
k8s-apiserver-audit-policy.yaml fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
kill_ns.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
lvm-pvc-snapshot.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
lvm-pvc-snapshot.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
migrate-state-to-pg fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
migrate_service_state.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
nfs-change-tracker.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
nfs-mirror.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
nfs-mirror.sh nfs-mirror: exclude /vzdump/ — it was reaping the new VM-image backups nightly 2026-06-10 09:04:57 +00:00
nfs-mirror.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
node_registry_manager.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
offsite-sync-backup.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
offsite-sync-backup.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
offsite-sync-backup.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
parse-postmortem-todos.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
pfsense-haproxy-bootstrap.php pfsense: SNI-routed internal 443 — mail.viktorbarzin.me serves webmail everywhere 2026-06-10 18:41:07 +00:00
pfsense-nat-mailserver-haproxy-flip.php fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
pfsense-nat-mailserver-haproxy-unflip.php fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
postmortem-pipeline.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
provision-k8s-worker fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
pve-nfs-exports fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
pve-promtail.service pve-host: ship journal to Loki (snoopy command audit + sshd-pve) for emo's root SSH 2026-06-10 19:31:45 +00:00
pve-promtail.yaml pve-host/dns: register loki.viktorbarzin.lan CNAME, drop the /etc/hosts pin 2026-06-10 22:55:20 +00:00
pve-snoopy.ini pve-host: ship journal to Loki (snoopy command audit + sshd-pve) for emo's root SSH 2026-06-10 19:31:45 +00:00
renew_worker_certs.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
setup-containerd-pullthrough.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
setup-forgejo-containerd-mirror.sh dns: pfSense forward-zone for viktorbarzin.me, nodes fully stock [ci skip] 2026-06-10 08:32:34 +00:00
setup-task-pipeline.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
setup_containerd_mirrors.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
sshd-10-breakglass.conf break-glass SSH: drop port-knock for exposed key-only :52222; version host config 2026-06-11 18:23:39 +00:00
state-sync fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
stop_storage_services.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
sudoers-t3-autopair fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-autoupdate.service t3: pin t3@0.0.24 + stop nightly auto-update (auth-outage fix) [ci skip] 2026-06-09 21:41:53 +00:00
t3-autoupdate.sh t3: bump pin 0.0.24 -> 0.0.26 (fable-5) [ci skip] 2026-06-09 21:41:53 +00:00
t3-autoupdate.timer t3: pin t3@0.0.24 + stop nightly auto-update (auth-outage fix) [ci skip] 2026-06-09 21:41:53 +00:00
t3-backup-state.service t3: prepare to adopt 0.0.25 — version-agnostic dispatch + real pairing health-check + state backup [ci skip] 2026-06-09 21:41:53 +00:00
t3-backup-state.sh t3: prepare to adopt 0.0.25 — version-agnostic dispatch + real pairing health-check + state backup [ci skip] 2026-06-09 21:41:53 +00:00
t3-backup-state.timer t3: prepare to adopt 0.0.25 — version-agnostic dispatch + real pairing health-check + state backup [ci skip] 2026-06-09 21:41:53 +00:00
t3-dispatch.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-mint fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-provision-users.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-provision-users.sh workstation: per-user code_layout — workspace puts project repos under ~/code (ancamilea + tripit) 2026-06-10 18:05:31 +00:00
t3-provision-users.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
t3-serve@.service t3-serve@: contain agent memory storms; survive child OOM kills 2026-06-10 21:00:06 +00:00
task-processor.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
test-fan-control.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
test-vault-token-renew.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
tg fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
tmux-persist-restore.service workstation: rename tmux persistence out of the t3 namespace [ci skip] 2026-06-10 17:42:52 +00:00
tmux-persist-save.service workstation: rename tmux persistence out of the t3 namespace [ci skip] 2026-06-10 17:42:52 +00:00
tmux-persist-save.timer workstation: rename tmux persistence out of the t3 namespace [ci skip] 2026-06-10 17:42:52 +00:00
tmux-persist.sh tmux-persist: add single-user restore mode (restore [user]) 2026-06-10 21:08:57 +00:00
update-istio-injection.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
update_k8s.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
update_node.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
upgrade_state.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
vault-kubeconfig fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
vault-token-renew.service fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
vault-token-renew.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
vault-token-renew.timer fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
vzdump-vms.service backup: image-level vzdump of hand-managed VMs (devvm) — close no-VM-backup DR gap 2026-06-09 21:41:54 +00:00
vzdump-vms.sh backup: fix vzdump-vms exit code — EXIT-trap && short-circuit falsely failed OK runs 2026-06-09 21:41:54 +00:00
vzdump-vms.timer backup: image-level vzdump of hand-managed VMs (devvm) — close no-VM-backup DR gap 2026-06-09 21:41:54 +00:00
woodpecker-register-forgejo-repo.sh fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00