LAN port scan forbidder
Forbid non-LAN web to access LAN
什么是LAN port scan forbidder？
LAN port scan forbidder是由https://garywill.github.io开发的Chrome扩展程序，该扩展的主要功能是“Forbid non-LAN web to access LAN”。
扩展截图
下载LAN port scan forbidder扩展crx文件
下载LAN port scan forbidder扩展crx格式的文件，手动将Chrome插件安装到浏览器中，也可以将crx文件分享给朋友，轻松安装Chrome插件。
扩展使用说明
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/
## 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](https://github.com/whitequark/ipaddr.js) (MIT License) v2.0.0 to judge IP range.
### Notification
User can enable notification. When untrusted web tries to access private network and get blocked, will show up notification.
### 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 `127.0.0.1` communication to interact between native program and web.
## Disclaimer
This open souce addon comes with no warranty. Use on you own risk! 扩展基本信息
| 名称 |  LAN port scan forbidder |
| ID | lapppchpconamefemlnjdebbcpbncafl |
| 官方URL | https://chromewebstore.google.com/detail/lan-port-scan-forbidder/lapppchpconamefemlnjdebbcpbncafl |
| 简介 | Forbid non-LAN web to access LAN |
| 文件大小 | 35.41 KB |
| 安装次数 | 310 |
| 当前版本 | 0.6.1 |
| 更新时间 | 2023-11-09 |
| 上架时间 | 2021-12-25 |
| 开发者 | https://garywill.github.io |
| 电子邮箱 | [email protected] |
| 付费类型 | free |
| 扩展官网 | https://github.com/garywill/LAN-port-scan-forbidder |
| 帮助页面URL | https://github.com/garywill/LAN-port-scan-forbidder |
| 隐私政策页面URL | https://github.com/garywill/garywill/blob/privacy_policy/README.md |
| 支持的语言 | en |
| manifest.json | |
{
"update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
"name": "LAN port scan forbidder",
"description": "Forbid non-LAN web to access LAN",
"manifest_version": 2,
"version": "0.6.1",
"homepage_url": "https:\/\/github.com\/garywill\/LAN-port-scan-forbidder\/",
"author": {
"name": "Garywill",
"url": "https:\/\/garywill.github.io"
},
"permissions": [
"webRequest",
"webRequestBlocking",
"*:\/\/*\/*",
"ws:\/\/*\/*",
"wss:\/\/*\/*",
"ftp:\/\/*\/*",
"contextMenus",
"storage"
],
"optional_permissions": [
"notifications"
],
"icons": {
"128": "icon.png"
},
"background": {
"page": "background.html"
},
"browser_action": {
"default_icon": "icon_gray.png",
"default_title": "LAN port scan forbidder"
},
"commands": {
"_execute_browser_action": {
"description": "Click toolbar button"
},
"toggle_t": {
"description": "Toggle for one tab"
},
"toggle_h": {
"description": "Toggle for one tab and new tabs opened by it"
},
"toggle_global": {
"description": "Toggle globally enable\/disable"
}
},
"options_ui": {
"page": "options.html"
}
} | |
