AP-Isolation-Bypass

校园网AP隔离解决方案-解决校内设备无法互相通信的臭毛病

Campus Network AP Isolation Solution - Solving the annoying problem of devices unable to communicate with each other within campus

使用方法 | How to Use

双击运行，自动检测网卡阶段可能需要按一下回车，成功自动配置路由表后程序会自动关闭。 每次重新联网或者重启电脑需要重新运行一次AP隔离破解的exe。

Double-click to run. During automatic network card detection, you may need to press Enter. The program will automatically close after successfully configuring the routing table. You need to run the AP isolation bypass exe again every time you reconnect to the network or restart your computer.

我们的目标 | Our Goal

解决校内两设备无法互相通信的臭毛病

To solve the problem of two devices unable to communicate within campus

核心思想 | Core Concept

自己重新设置路由规则

Resetting routing rules ourselves

举个例子 For example:

• AP隔离就像"教室规定学生不能直接传纸条"

• 但学生都可以和老师（网关）通信

• 修改路由相当于"所有纸条都先交给老师转交"

• 这样就绕过了"学生之间不能直接传纸条"的限制

• AP isolation is like "classroom rules prohibiting students from passing notes directly"

• But all students can communicate with the teacher (gateway)

• Modifying routes is equivalent to "having all notes passed through the teacher"

• This bypasses the restriction of "students cannot pass notes directly"

问题介绍 | Problem Introduction: AC AP 隔离 (AP Isolation)

两台电脑在同一楼层时触发了ap隔离，但是隔了距离跨ap是可以正常访问的，这就是原因

When two computers are on the same floor, AP isolation is triggered, but normal access is possible when they are separated across different APs.

AP隔离非常类似有线网络的VLAN(虚拟局域网)，将所有的无线客户端设备之间完全隔离，是客户端只能访问AP接入的固定网络。通俗来讲，就是各个连接无线的客户机（如手机、电脑等）之间无法互相通讯的，即你无法在两台同时连接AP的电脑间使用类似共享文件等功能。因此，在开启该功能之后，可以保护不同用户间的数据安全，有利于抵御外部攻击。

AP isolation is very similar to VLAN (Virtual Local Area Network) in wired networks. It completely isolates all wireless client devices from each other, allowing clients to only access the fixed network connected to the AP. In simple terms, this means connected wireless clients (such as phones, computers, etc.) cannot communicate with each other, preventing functions like file sharing between two computers connected to the same AP. Therefore, enabling this feature protects data security between different users and helps resist external attacks.

原理解释 | Principle Explanation

1. 正常情况（有AP隔离）| Normal situation (with AP isolation)

设备A ←→ AP ←→ 设备B
❌
设备A ←→ 设备B
Device A ←→ AP ←→ Device B
❌
Device A ←→ Device B

2. 修改路由后 | After route modification:

设备A → 网关 → 设备B
设备B → 网关 → 设备A
Device A → Gateway → Device B
Device B → Gateway → Device A

破解工作原理 | How the Bypass Works

设备A ─→ 检测网关 ─→ 修改路由 ─┐
			     ├─→ 可以互相访问
设备B ─→ 检测网关 ─→ 修改路由 ─┘
Device A ─→ Detect Gateway ─→ Modify Routes ─┐
					     ├─→ Can access each other
Device B ─→ Detect Gateway ─→ Modify Routes ─┘