TCP Flags by Libor Benes

An offline, searchable 9 TCP flags reference. Clean, instant, private, for air-gapped systems, and always visible in your sidebar. Safe coding, no tracking, no data collection.

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About this extension

TCP Flags gives you instant access to all 9 TCP control flags with clear, consistent explanations and real-world context - directly in your browser sidebar.

Features:
• 9 TCP flags: ACK, CWR, ECE, FIN, NS, PSH, RST, SYN, URG.
• Nmap scan types: -sS, -sF, RST scans, etc.
• ECN, HTTP, and exploit context.
• Search functionality.
• 100% offline, works on air-gapped systems.

Security & Privacy First:
• No analytics, tracking, or user data collection of any kind.
• Fully local, no network requests.
• Safe code.
• Minimal permissions.

Perfect for:
• Penetration testers (OSCP, CEH).
• Network engineers (CCNA, CCNP).
• SOC analysts & incident responders.
• Students & certification prep.
• Anyone using Wireshark, tcpdump, or Nmap.

Unlike online cheat sheets that require the Internet and may track you, TCP Flags delivers instant, reliable flag information - safely and privately.

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