LAN port scan forbidder

生产工具插件用户量: 58大小: 34.14KiB版本: v 0.5.0更新时间: 2021-12-27
用户量:58大小:34.14KiB版本:v 0.5.0更新时间:2021-12-27

Forbid non-LAN web to access LAN

LAN port scan forbidder 的使用方法详解,最全面的教程

LAN port scan forbidder 描述:



扩展大小:34.14 KiB


版本:v 0.5.0

LAN port scan forbidder 插件简介:

这是来自Chrome商店的 LAN port scan forbidder 浏览器插件,您可以在当前页面下载它的最新版本安装文件,并安装在Chrome、Edge等浏览器上。

LAN port scan forbidder插件下载方法/流程:


LAN port scan forbidder插件安装教程/方法:


(2) 从设置->更多工具->扩展程序 打开扩展程序页面,或者地址栏输入 Chrome://extensions/ 按下回车打开扩展程序页面

(3) 打开扩展程序页面的“开发者模式”

(4) 将crx文件拖拽到扩展程序页面,


Forbid untrusted web to scan localhost or LAN. ## Source Code Repo ## What Webs can try to fetch `` 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: ## So Forbid any website behaviors trying to connect to your LAN or localhost, if user is visiting the website via their domains or public IP addresses. (Read the source code `background.js` to see the logic) > Using JS library [whitequark/ipaddr.js]( (MIT License) v2.0.0 to judge IP range. ### Fallback operation If user find a web broken, user can temporary set this addon disabled via toolbar button for: - this one tab - this one tab and new tabs opened by this tab - this one window (Firefox only) - globally (above can be set as keyboard shortcuts) there's showy toolbar button badge indicating disabling status. ## Cases when web LAN scan is properly used Not all LAN-port-scan are evil. - Some manufacturers provide web for user's browser to scan LAN for their product that need updating. - Some softwares use `` communication to interact between native program and web.


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