多个 SSH 服务复用同一端口

通过使用 tcpmux 类型的代理，您可以实现多个 SSH 服务通过同一端口进行暴露。这种方法还适用于任何支持 HTTP Connect 代理连接方式的客户端，以实现端口的复用。

步骤

在具有公网 IP 的机器上部署 frps

修改 frps.toml 文件以包含以下内容（这里使用了最简化的配置）：
```
bindPort = 7000
      tcpmuxHTTPConnectPort = 5002
      
```

在内网机器 A 上部署 frpc

创建 frpc 配置文件，例如 frpc.ini，然后将以下内容添加到配置文件中：

serverAddr = "x.x.x.x"
      serverPort = 7000
      
      [[proxies]]
      name = "ssh1"
      type = "tcpmux"
      multiplexer = "httpconnect"
      customDomains = ["machine-a.example.com"]
      localIP = "127.0.0.1"
      localPort = 22

在内网机器 B 上部署另一个 frpc

创建 frpc 配置文件，例如 frpc.toml，然后将以下内容添加到配置文件中：

serverAddr = "x.x.x.x"
      serverPort = 7000
      
      [[proxies]]
      name = "ssh2"
      type = "tcpmux"
      multiplexer = "httpconnect"
      customDomains = ["machine-b.example.com"]
      localIP = "127.0.0.1"
      localPort = 22

通过 SSH ProxyCommand 访问内网机器 A

使用 SSH ProxyCommand 访问内网机器 A，假设用户名为 test。使用以下命令：
```
ssh -o 'proxycommand socat - PROXY:x.x.x.x:machine-a.example.com:22,proxyport=5002' test@machine-a
      
```
要访问内网机器 B，只需更改域名，假设用户名仍然为 test：
```
ssh -o 'proxycommand socat - PROXY:x.x.x.x:machine-b.example.com:22,proxyport=5002' test@machine-b
      
```

通过按照以上步骤进行配置，您可以实现多个 SSH 服务复用同一端口，以便在具有公网 IP 的机器上进行访问。

最后修改 November 15, 2023: fix 404 (#71) (626ce4d)

Multiple SSH services reuse the same port

By using tcpmux type agents, you can achieve multiple SSH Services are exposed through the same port. This method is also applicable to any support for HTTP Connect the client using the Connect Agent connection method to achieve port reuse.

Steps

Deploy frps on machines with public IP

Modify frps.toml The file contains the following content (using the simplified Configuration here):
```
bindPort = 7000
    tcpmuxHTTPConnectPort = 5002
    
```

Deploy frpc on internal machine A

Create a frpc Configuration file, for example Frpc.ini, then add the following content to the Configuration file:

serverAddr = "x.x.x.x"
    serverPort = 7000
    
    [[proxies]]
    name = "ssh1"
    type = "tcpmux"
    multiplexer = "httpconnect"
    customDomains = ["machine-a.example.com"]
    localIP = "127.0.0.1"
    localPort = 22

Deploy another frpc on internal machine B

Create a frpc Configuration file, for example Frpc.toml, then add the following content to the Configuration file:

serverAddr = "x.x.x.x"
    serverPort = 7000
    
    [[proxies]]
    name = "ssh2"
    type = "tcpmux"
    multiplexer = "httpconnect"
    customDomains = ["machine-b.example.com"]
    localIP = "127.0.0.1"
    localPort = 22

Accessing internal machine A through SSH ProxyCommand

Use SSH ProxyCommand to access internal machine A, assuming the username is Test. Use the following command:
```
ssh -o 'proxycommand socat - PROXY:x.x.x.x:machine-a.example.com:22,proxyport=5002' test@machine-a
    
```
To access private network machine B, simply change the domain name, assuming that the user name is still test:
```
ssh -o 'proxycommand socat - PROXY:x.x.x.x:machine-b.example.com:22,proxyport=5002' test@machine-b
    
```

By following the steps above to Configuration, you can implement multiple SSH. Services reuse the same port for access on machines with public network IP。

Last modified November 15, 2023: fix 404 (#71) (626ce4d)