firewall

firewall is a Hardening & security compliance skill for AI agents, published by claude-dev-suite in the claude-dev-suite repository on GitHub. Skillspace rates firewall F (53/100) and it passed the safety scan; the rating is based on static analysis only.

Linux firewall configuration skill: UFW (Uncomplicated Firewall), iptables, nftables fundamentals, and fail2ban intrusion prevention. USE WHEN: - Setting up UFW on a new server (default deny-in, allow-out, selective port opens) - Configuring rate limiting and per-IP connection limits with UFW or iptables - Installing and tuning fail2ban for SSH, Nginx, and custom application jails - Writing iptables NAT rules (MASQUERADE for WireGuard/VPN, DNAT for port forwarding) - Diagnosing lockouts, fail2ban false positives, or blocked legitimate traffic - Setting up cloud security groups as the first layer of defence DO NOT USE FOR: - Application-level authentication / authorisation (use authentication skill) - SSL/TLS certificate management (use ssl-tls skill) - Kubernetes NetworkPolicy rules (use kubernetes skill) - WAF (Web Application Firewall) rules — Nginx rate limiting covers basic cases

Grade

F

Quality

53 / 100

Safety

Passed

GitHub stars

24

Unproven: rated by static analysis only, not yet compared head-to-head.

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