NatTypeChecker

A useful NAT type checker with STUN protocol, base JS.

Using Google stun server, available.

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Quote:

https://webrtchacks.com/symmetric-nat/

https://jsfiddle.net/5ftsd5c2/17/

https://github.com/fippo/sdp

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Usage

1. Open Chrome, and open Developer Tools in Chrome (F12)
2. Switch to Console tab, Paste the code from checker.js into console, then Press Enter to run the script
3. Console will print your NAT type below.

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Prints

normal nat: Means your NAT type is normal NAT type, asymmetric.

symmetric nat：Means your NAT type is symmetric NAT type.

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After

This just a little tool to check your NAT type, not an official tools.

As usual, Iphone hotspot wifi sharing is a symmetric NAT, home land network is asymmetric, Switch your network for a test, you will know. Tanks.

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NAT类型检查工具

一个使用STUN协议且基于JS的可用的NAT类型检查工具.

使用Google的stun服务器，可用，记得看看自己是否能访问Google。

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引用/相关文章：

https://webrtchacks.com/symmetric-nat/

https://jsfiddle.net/5ftsd5c2/17/

https://github.com/fippo/sdp

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用法

1. 打开Chrome，打开开发者工具(F12)
2. 选择Console控制台面板并粘贴从checker.js复制的代码，按回车键运行
3. Console控制台会在下方输出你的网络类型

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输出

normal nat: 表示为普通NAT（非对称NAT）

symmetric nat：表示对称型NAT

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写在最后

这是一个测试你的NAT类型小工具，并不是官方的工具。

通常来说，Iphone的热点是对称型的NAT，家庭宽带是非对称的NAT，大家换一下网络测试一下就知道，