I made a simple service / customer chat software with Delphi5's Socket, which can pass in the LAN, but it is difficult to connect in the Internet (once in the case where the other party is Win98 ok {I put the server side Send to the other party and run}), we are all public IPs, why? Is it a problem with the server-side operating system settings? Is it a problem with the server side firewall? (Is it closed), is it the problem of my server-side control settings? Or is the control, is it designed for a local area network, or the control version is too low (can I provide with INDY? Is there any instructions?) Or other problem?
Please give me a big brother? Thank you, the younger brother
