- hardening/: ufw after.rules block for DOCKER-USER (ctorigdstport, not dport),
fail2ban jail.local with sshd (systemd backend) and caddy-probes (chain DOCKER-USER),
filter for the JSON access log, sshd hardening.conf, README with the order and
the two traps measured in the episode
- caddy/Dockerfile: xcaddy build with caddy-ratelimit, compose builds the image
- Caddyfile: common snippet (JSON access log, Server header stripped), vault /admin 404,
rate_limit zones on the vault token endpoint and the git login form
- HARDENING.md: firewall and fail2ban sections rewritten around what the port scan saw
Claude-Session: https://claude.ai/code/session_017iP581CYtPfxdZYPPAyWZA