Forward DNS Query Requests

DNS query requests typically use the UDP protocol, and frp supports penetration of intranet UDP services, with configuration similar to TCP.

Steps

1. Configure frps.toml

   Add the following content to the frps.toml file:

   bindPort = 7000
   

2. Configure frpc.toml

   Add the following content to the frpc.toml file:

   serverAddr = "x.x.x.x"
   serverPort = 7000
   
   [[proxies]]
   name = "dns"
   type = "udp"
   localIP = "8.8.8.8"
   localPort = 53
   remotePort = 6000
   

   Please note that this example reverse-proxies Google’s DNS query server address, which is only for testing UDP proxy and has no practical significance.

3. Start frps and frpc

   Start frps and frpc respectively.

4. Test DNS Query Requests

   Use the following command to test UDP packet forwarding with the dig tool, expecting to return the resolution result for the www.baidu.com domain:

   dig @x.x.x.x -p 6000 www.baidu.com