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Port Authority

github.comBrowser DevTools & extensions

PulseGate's liveness check found it on 8 Oct 2026; it is registered on Firefox Add-ons and has been in the index since 7 Sep 2026. How this is checked

Port Authority is an open-source Firefox browser extension that blocks websites from using JavaScript to port scan a user's computer or network. It also dynamically blocks LexisNexis data-collection endpoints and related invasive scripts.

Inferred · not functionally tested

Open SourceWebEmbeddable
Port Authority preview
Visit github.com

Overview

5 features

Purpose: Preventing websites from scanning local networks and running invasive tracking scripts in the browser.

Inferred · not functionally tested

Audience: privacy-conscious Firefox users

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: open_source · license: Open Source · platforms: WEB · deployment: browser, embeddable

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: github.com · addons.mozilla.org. These links do not verify the individual claims.

Port Authority is a Browser DevTools & extensions project. Inferred · not functionally tested: It focuses on preventing websites from scanning local networks and running invasive tracking scripts in the browser. Inferred · not functionally tested: It is built as an open-source project for privacy-conscious Firefox users. Basis unknown · not verified: The project is open source (Open Source). Basis unknown · not verified: It ships for the web and embeddable surfaces.

Behind Port Authority is ACK-J, and it first shipped in 2021. Inferred · not functionally tested: Among its 5 catalogued features are port scan blocking, script blocking, and endpoint blocking.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Port scan blocking
  • Script blocking
  • Endpoint blocking
  • Network protection
  • Firefox integration

Topics: Inferred · not functionally tested

Tags
firefox-extensionport-scan-blockingprivacy-protectiontracker-blocking

JSON profile · Text profile · Access guide

Built with & integrations

Runs on
BrowserEmbeddable

Trust & compliance

License
Open Source
Public signals
HTTPSOpen SourceFree tierStore listing found

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed7 Sep · 23:42 UTC
    Port Authority seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about Port Authority

What does Port Authority do?
Inferred · not functionally tested: Port Authority focuses on preventing websites from scanning local networks and running invasive tracking scripts in the browser. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Port Authority?
Inferred · not functionally tested: Port Authority is an open-source project built for privacy-conscious Firefox users.
Does Port Authority have a free plan?
Basis unknown · not verified: Yes — Port Authority is open source under the Open Source license and free to use.
What platforms does Port Authority run on?
Basis unknown · not verified: Port Authority runs on the web and embeddable surfaces.
Is Port Authority still active?
PulseGate's liveness check found it on 8 Oct 2026.
Who develops Port Authority?
Port Authority is developed by ACK-J.
When did Port Authority launch?
Port Authority first shipped in 2021.
Is Port Authority open source?
Basis unknown · not verified: Yes — Port Authority is open source under the Open Source license.

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