Well, I'm trying to just start a co-op game of Ancient Aliens with my girlfriend. I've tried a ton of source ports, but none of them work. She can't connect to my server if I make one, and I cannot connect to hers if she makes one.
I'm not sure what source port is best for LAN, and which will work, honestly. I'm not entirely sure what I'm doing, I'm simply setting a server up yet it's completely invisible to her. But if she makes a server, it shows up for me, but it's stuck on the console saying: "Connecting to (IP Address)"