I'm trying to make a simple IM program. I created a server and client that connects specifically to my computer using Winsock2.h

I tested it and it works from my computer to my server, from my roommates computer to my server, the library computer to my server, but I had a friend in a different town test it and I keep getting 10061 timeout error.

I was thinking it was a firewall problem from my internet provide server, but I don't know, and I was hoping if someone could tell me what is preventing the connection, and if possible if I could get around it in my program or if I have to talk to a network technician to get it allowed.

thanks