Port Authority

Port Authority

Blocks websites from using javascript to port scan your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.

Port Authority promo image
What is Port Authority?

Port Authority is a free and open-source (FOSS) Firefox add-on designed to enhance privacy and security. It prevents potential port scanning via HTTP/HTTPS/WS/WSS/FTP/FTPS, dynamically blocks the ThreatMetrix tracking scripts used by Lexis Nexis, gives a notification when a malicious script or port scan is blocked, and allows users to establish a whitelist of trusted domains. The add-on doesn't store or transmit any information about the user or their requests, maintaining the utmost respect for privacy.

Stats date:
Rating: 4.72 (18)
Version: 1.1.4 (Last updated: 2023-08-03)
Creation date: 2021-03-22
Weekly download count: 24
Firefox on Android: No
Manifest version: 2
  • webRequest
  • webRequestBlocking
  • storage
  • unlimitedStorage
  • tabs
  • notifications
  • dns
  • <all_urls>
Size: 173.81K
URLs: Website
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

Code This addon is free and open-source software (FOSS) all code can be found here: https://github.com/ACK-J/Port_Authority Please report your bugs or feature requests in a GitHub issue instead of in a review.

Blog Post (Currently Down) https://www.g666gle.me/Port-Authority/

Test if it works! (Currently Down) https://www.g666gle.me/PortScan.html

What does this addon do?

  1. Blocks all possible types of port scanning (HTTP/HTTPS/WS/WSS/FTP/FTPS)
  2. Dynamically blocks the ThreatMetrix tracking scripts made by one of the largest and least ethical data brokers IMO (Lexis Nexis)
  3. Easily auditable, with the core functionality being about 250 lines of commented code. HERE
  4. Gives an optional notification when one of the above scenarios are blocked
  5. Provides an optional whitelist to prevent portscans and tracking scripts from being blocked on trusted domains
  6. This addon doesn't store/transmit any data or metadata about you or your requests... because ya know privacy
Donations If you are feeling generous or really like my work, consider donating
  • Monero Address: 89jYJvX3CaFNv1T6mhg69wK5dMQJSF3aG2AYRNU1ZSo6WbccGtJN7TNMAf39vrmKNR6zXUKxJVABggR4a8cZDGST11Q4yS8
  • Total donated (Aug 1, 2023): 0.0 XMR
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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works very well in preventing websites from port scanning
  • Open-source
  • Option to whitelist domains
  • Difficulty in disabling notifications
  • Causes browser to boot-loop
  • Issues with redirection to localhost port
Most mentioned
  • Port scanning prevention
  • Notification settings
  • Domain whitelist feature
  • Issues with localhost redirection
  • Browser boot-loop
View all user reviews
Risk impact

Port Authority is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Port Authority if you trust the publisher.

Risk likelihood

Port Authority is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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