C＃套接字服务器和客户端

Question

Have anyone able to use visual studio socket server and client to work successfully over WAN network and not LAN?? I got it to work on LAN but not over the WAN.

Answer 1

By far the most common cause of problems when you go from LAN to WAN is firewall setup. If the server process is behind a NAT firewall, then you will need to connect to the public IP address assigned to you by your ISP, but it won't work until you set up a pinhole in the firewall's configuration that directs incoming connections to the appropriate internal IP/port.