Configures Fail2ban with custom filters and actions to detect port scanning activity, SSH brute force attempts, and network reconnaissance, automatically banning offending IP addresses and alerting security teams to suspicious network probing.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-port-scanning-with-fail2bannpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-port-scanning-with-fail2ban -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-port-scanning-with-fail2ban -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/detecting-port-scanning-with-fail2bangh skill install mukul975/Anthropic-Cybersecurity-Skills detecting-port-scanning-with-fail2bangit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/detecting-port-scanning-with-fail2ban ~/.claude/skills/detecting-port-scanning-with-fail2ban # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/detecting-port-scanning-with-fail2ban ~/.agents/skills/detecting-port-scanning-with-fail2ban # Codex, Cursor, Gemini CLI, Copilot, OpenCode