# TCP States DevTools Panel

> Monitor TCP connection states (LISTEN, ESTABLISHED, SYN\_SENT, CLOSE\_WAIT, LAST\_ACK, CLOSED) in in real-time within a Firefox DevTools Panel. Export logs as CSV and view warnings.

Canonical page: [https://chrome-stats.com/d/tcp\_states\_devtools\_panel](https://chrome-stats.com/d/tcp_states_devtools_panel)

## Overview

- **ID:** `tcp_states_devtools_panel`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Libor Benes (Dr. B)
- **Category:** web-development,privacy-security,search-tools
- **Daily users:** 1
- **Version:** 1.0.0
- **Last updated:** 2025-08-29
- **First published:** 2025-08-26
- **Size:** 18 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tcp_states_devtools_panel/)
- **Website:** [https://www.linkedin.com/in/LiborBenes](https://www.linkedin.com/in/LiborBenes)

## Description

• A lightweight Firefox add-on for network engineers and developers.
• View connection details (URL, Method, Status, TCP State) in a table.
• Export logs as CSV and check warnings for stuck connections (e.g., SYN_SENT).
• Includes a state reference and operates offline.
• Prioritizes security with minimal permissions, local processing, and no data collection.
• Access usage instructions over the browser action popup. Supports Firefox 128+.

## Rankings

- #114,409 — Overall
- #106 — panel
- #213 — state

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `<all_urls>`
- `downloads`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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_states_devtools_panel)