Chat Over Internet Not Working?

I have built a chat program that uses sockets and server sockets. The program works using 1 computer, and works using multiple computers that are on the SAME network.

I am having problems connecting to my server socket when the client computer is on a different network.

I have searched about this and could not find to much on my problem. Is there some component that I am missing for internet communication? Any help would be appreciated!

You will have to expose your public ip and the particular port to the internet and forward the traffic to your private IP of the computer that is running the server.

Google how to do "Port Forwarding" for your particular router.

I made the port forwarding changes to my router but the client still can't connect. Do I have to do anything to the router on the client side?

With your client, are you connecting to the public IP of the server?

You can google your public IP: "what is my IP"

When you get that working you can also look into setting up a dynamic DNS that will auto update your public IP address when it changes.

Edit: you don't need to worry about the client, just the server.