One day I tried to play in a LAN world via Hamachi. But when I gave her the IP she said it didn't work. Then she gave me her ip, but it didn't work also! My version is 1.7.2 and hers is 1.7.2 also. What do I need to do to establish a connection?
I don't know if single player networking works outside our home, but you can use lan at your home, or do this: