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: Block JS Port Scans & Data Scripts
"Port Authority" is a FOSS Firefox add-on providing robust defense against unauthorized JavaScript port scans and invasive data collection scripts by LexisNexis. This user-friendly tool notifies users of blocked activity, includes a customizable whitelist, ensures privacy, requires minimal permissions, and does not store or transmit users' data. It's developed in response to unethical tracking, offering dynamic blocking of harmful domains and scripts, supported by community contributions and extensive research into data privacy threats.
Add-on stats
Weekly download count: 18
Firefox on Android: No
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- webRequest
- webRequestBlocking
- storage
- unlimitedStorage
- tabs
- notifications
- dns
- <all_urls>
Size: 173.81K
URLs: Website
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary
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?
- Blocks all possible types of port scanning (HTTP/HTTPS/WS/WSS/FTP/FTPS)
- Dynamically blocks the ThreatMetrix tracking scripts made by one of the largest and least ethical data brokers IMO (Lexis Nexis)
- Easily auditable, with the core functionality being about 250 lines of commented code. HERE
- Gives an optional notification when one of the above scenarios are blocked
- Provides an optional whitelist to prevent portscans and tracking scripts from being blocked on trusted domains
- This addon doesn't store/transmit any data or metadata about you or your requests... because ya know privacy
- Monero Address: 89jYJvX3CaFNv1T6mhg69wK5dMQJSF3aG2AYRNU1ZSo6WbccGtJN7TNMAf39vrmKNR6zXUKxJVABggR4a8cZDGST11Q4yS8
- Total donated (Jan 1, 2024): 0.0 XMR
User reviews
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. Pros
- Works well for preventing port scanning
- Effective in blocking multiple scanning methods
- Generally enhances privacy and security
- Users appreciate its functionality when it works as intended
Cons
- Lacks whitelisting or exception features
- Settings do not persist after browser restarts
- Causes issues with certain applications (e.g., Jupyter notebooks)
- Can be overly restrictive, leading to usability problems on some sites
Most mentioned
- Whitelisting option needed
- Persistent settings issue
- Notifications re-enable themselves
- Browser boot-loop issue
User reviews
Brilliant and enlightening little project. Foolish that people take stars away for not fulfilling their specific use cases. Don't ding it, just leave your gripes in the comments. This deserves five stars.
by Erector Set, 2024-11-29
by al3ph, 2024-11-13
by Firefox user 17429830, 2024-09-27
Add-on safety
Risk impact
Port Authority requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Port Authority has earned a fairly good reputation and likely can be trusted.
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