Build dumb-pipe and traffic-filtering C2 redirectors with nginx (proxy_pass) and Apache (mod_rewrite), deriving filter rules from a Malleable C2 profile, layering Let's Encrypt TLS, and applying OPSEC controls like domain fronting and UA/geo filtering.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill building-c2-redirector-infrastructurenpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill building-c2-redirector-infrastructure -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill building-c2-redirector-infrastructure -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/building-c2-redirector-infrastructuregh skill install mukul975/Anthropic-Cybersecurity-Skills building-c2-redirector-infrastructuregit 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/building-c2-redirector-infrastructure ~/.claude/skills/building-c2-redirector-infrastructure # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/building-c2-redirector-infrastructure ~/.agents/skills/building-c2-redirector-infrastructure # Codex, Cursor, Gemini CLI, Copilot, OpenCode