LAN port scan forbidder

Forbid non-LAN web to access LAN

What is LAN port scan forbidder?

LAN port scan forbidder is a Chrome extension that safeguards your local network by preventing untrusted websites from accessing your LAN and scanning for open ports. It protects against tracking fingerprint and allows you to disable the extension for specific tabs or windows if needed.

Download

Stats

By: https://garywill.github.io

View on Chrome Web Store

Users: 298 ▲ 1

Version: 0.6.2 (Last updated: 2024-03-23)

Creation date: 2021-12-25

Risk impact: High risk impact

Risk likelihood: Moderate risk likelihood

Manifest version: 2

Permissions:

webRequest
webRequestBlocking
*://*/*
ws://*/*
wss://*/*
ftp://*/*
contextMenus
storage

Size: 38.39K

Email: ga*****@gmx.com

URLs: Website ,Privacy policy

Stats date:

Chrome-Stats Rank

# 46130 ▼ 108

Other rankings

#245 in Privacy & Security #33 in scan keyword 33 ▼ 5

Other platforms

Not available on Firefox

Not available on Edge

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Summary

Analyze keywords

Forbid untrusted web to scan localhost or LAN.

Source Code Repo

https://github.com/garywill/LAN-port-scan-forbidder

What

Webs can try to fetch 127.0.0.1:xxxx or 192.168.Y.Z:xxxx to scan your open ports in LAN.

Although browsers have cross-domain protections, webs can't read response contents, but can still see the connection succeeds or fails.

There're already reports that some websites using that as tracking fingerprint.

A web for testing: http://samy.pl/webscan/

Safety

Risk impact

LAN port scan forbidder 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 extension. Review carefully before installing. We recommend that you only install LAN port scan forbidder if you trust the publisher.