点对点内网穿透

这个示例将演示如何通过点对点 (P2P) 连接来访问内网服务，流量不会通过服务器中转。

frp 提供了一种新的代理类型 xtcp，用于在需要传输大量数据且不希望流量经过服务器的情况下实现内网穿透。

与 stcp 类似，使用 xtcp 需要在两端都部署 frpc 以建立直接连接。

需要注意的是，xtcp 并不适用于所有类型的 NAT 设备，如果穿透失败，可以尝试使用 stcp 代理。

步骤

配置需要暴露到外网的机器上的 frpc.toml 文件

在 frpc.toml 文件中添加以下内容，确保设置了正确的服务器地址和端口以及共享密钥 (secretKey)，以及本地服务的 IP 地址和端口：

serverAddr = "x.x.x.x"
    serverPort = 7000
    # 如果默认的 STUN 服务器不可用，可以配置一个新的 STUN 服务器
    # natHoleStunServer = "xxx"
    
    [[proxies]]
    name = "p2p_ssh"
    type = "xtcp"
    # 只有共享密钥 (secretKey) 与服务器端一致的用户才能访问该服务
    secretKey = "abcdefg"
    localIP = "127.0.0.1"
    localPort = 22

在想要访问内网服务的机器上部署 frpc

在 frpc.toml 文件中添加以下内容，确保设置了正确的服务器地址和端口，共享密钥 (secretKey) 以及要访问的 P2P 代理的名称：

serverAddr = "x.x.x.x"
    serverPort = 7000
    # 如果默认的 STUN 服务器不可用，可以配置一个新的 STUN 服务器
    # natHoleStunServer = "xxx"
    
    [[visitors]]
    name = "p2p_ssh_visitor"
    type = "xtcp"
    # 要访问的 P2P 代理的名称
    serverName = "p2p_ssh"
    secretKey = "abcdefg"
    # 绑定本地端口以访问 SSH 服务
    bindAddr = "127.0.0.1"
    bindPort = 6000
    # 如果需要自动保持隧道打开，将其设置为 true
    # keepTunnelOpen = false

通过 SSH 访问内网机器

使用 SSH 命令访问内网机器，假设用户名为 test：
```
ssh -oPort=6000 test@127.0.0.1
    
```

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

Point-to-point intranet penetration

This Example will demonstrate how to use peer-to-peer (P2P). Connect to access the intranet service, and traffic will not be transferred through the server.

Frp provides a new type of Agent xtcpUsed to achieve internal network penetration when a large amount of data needs to be transmitted and traffic is not desired to pass through the server.

Similar tostcp, Use xtcpFRPC needs to be deployed on both ends to establish a direct connection.

It should be noted thatxtcpis not applicable to all types of NAT If the penetration fails, you can try usingstcpAgent.

Steps

Configuration needs to be exposed to frpc.toml on machines outside the network File

In frpc.toml Add the following content to the file to ensure that the correct server address, port, and shared key are set up (secretKey), as well as the IP address and port of the local service:

serverAddr = "x.x.x.x"
    serverPort = 7000
    # If the default STUN server is not available, you can Configuration a new STUN server
    # natHoleStunServer = "xxx"
    
    [[proxies]]
    name = "p2p_ssh"
    type = "xtcp"
    # Only users whose shared key (secretKey) is consistent with the server can access the service.
    secretKey = "abcdefg"
    localIP = "127.0.0.1"
    localPort = 22

Deploy frpc on machines that want to access internal network services

In frpc.toml Add the following content to the file to ensure that the correct server address and port are set and the shared key is shared (secretKey) and the name of the P2P Agent to be accessed:

serverAddr = "x.x.x.x"
    serverPort = 7000
    # If the default STUN server is not available, you can configure a new STUN server
    # natHoleStunServer = "xxx"
    
    [[visitors]]
    name = "p2p_ssh_visitor"
    type = "xtcp"
    # Name of the P2P Agent to be accessed
    serverName = "p2p_ssh"
    secretKey = "abcdefg"
    # Bind a local port to access the SSH service
    bindAddr = "127.0.0.1"
    bindPort = 6000
    # If you need to keep the tunnel open automatically, set it to true
    # keepTunnelOpen = false

Access the private network machine through SSH

The Use SSH command accesses the private network machine, assuming that the user name is test：
```
ssh -oPort=6000 test@127.0.0.1
    
```

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