Me and my friend wanted to play Hexxit together so I created a server. I downloaded those server files from technicpack.net, I changed server properties, I downloaded Hamachi, I did something with Port Forwarding (I really don't understand this) and the server is working good. I can connect to it and play, but my friend can't. Each time he tries to connect, it says that connection timed out, or something like that. I tried many video walkthroughs and I don't know what else to do to play with my friend on that server. Please, help!