# TCP Flags

> 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.

Canonical page: [https://chrome-stats.com/d/tcp\_flags](https://chrome-stats.com/d/tcp_flags)

## Overview

- **ID:** `tcp_flags`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Libor Benes (Dr. B)
- **Category:** web-development,privacy-security,search-tools
- **Version:** 1.0
- **Last updated:** 2025-11-12
- **First published:** 2025-11-09
- **Size:** 15 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tcp_flags/)
- **Website:** [https://www.linkedin.com/in/LiborBenes](https://www.linkedin.com/in/LiborBenes)

## Description

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.

## Rankings

- #135,393 — Overall

## Permissions and access

### Permissions

- `storage`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- This extension website URL may be invalid

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/tcp_flags)