57_Wolve
e23557b4fb
Add a reusable iptables baseline that hardens hosts with ICMP + SSH defaults and lets deployments register the ports they need. INPUT is deny-by-default (loopback, established, ICMP, SSH on the configured port, plus registered ports); OUTPUT stays open and FORWARD is left untouched so Docker container networking is unaffected. Persistence is native -- no boot hook. Rules are saved and restored by the distro's own package (iptables/ip6tables on Alpine, iptables-persistent on Debian, iptables-services on Alma) via the new oslib helpers install_iptables / fw_save_cmd / fw_enable_restore. The saved ruleset carries the INPUT->sshguard jump, so brute-force protection survives reboot without the old sshguard-iptables hook. A self-contained /usr/local/sbin/firewall-apply rebuilds INPUT from declarative drop-ins under /etc/firewall/ports.d and runs the native save, so deployments add a port without needing the repo present: printf '80/tcp\n443/tcp\n' > /etc/firewall/ports.d/mystack.rule /usr/local/sbin/firewall-apply - SSH port read live from sshd_config (custom bastion ports just work); FW_SSH_SOURCE restricts the source CIDR; FW_ALLOW_PING gates echo - harden-ssh.sh / harden-jumphost.sh install it when ENABLE_FIREWALL=1 (default) and skip the sshguard-only hook; ENABLE_FIREWALL=0 keeps it - cloud-init base.yml / jumphost.yml forward the toggle - the four stack deploy.sh open_web_ports() register 80/443 via the firewall (ufw/firewalld kept as fallback); Docker-published ports bypass INPUT, so this is belt-and-braces and self-documenting - README + cloud-init/README document the mechanism, Docker caveat, and the `disable` recovery path
webfinger
A single Caddy container that serves /.well-known/webfinger at an apex domain
(for OIDC issuer discovery — used by Tailscale and others) and 301-redirects
everything else to a target URL.
Required .env values
| Variable | Notes |
|---|---|
BASE_DOMAIN |
Apex domain to serve from (e.g. example.com). |
ISSUER_URL |
OIDC issuer for the WebFinger response (your pocket-id). |
REDIRECT_URL |
Where non-WebFinger traffic is redirected (path + query preserved). |
ACME_EMAIL |
Let's Encrypt registration email. |
See .env.example.
Deploy
./automations.sh # Deploy on this host → deploy: webfinger
Or build + run the self-contained artifact:
./build.sh
scp deploy.sh root@host:
ssh root@host 'bash deploy.sh'
# non-interactive:
# BASE_DOMAIN=example.com ISSUER_URL=https://auth.example.com \
# REDIRECT_URL=https://example.org ACME_EMAIL=me@example.com SKIP_PROMPTS=1 bash deploy.sh
Unattended provisioning: cloud-init.yml.
Notes
- Standalone: binds 80/443 itself, so don't co-locate with another stack that wants those ports.
- DNS for
BASE_DOMAINmust resolve to the host and 80/443 be reachable before deploy.