MineThrough allows for players to play together using only each others usernames, no server hosting or port forwarding is necessary!

To use both players must have the mod installed. The hosting player goes to the single player menu and uses the MineThrough option in the top right to set a password and hit the check box to host on world load. Alternatively the /minethrough open <password> command may be used to set the server up for hosting. Any players wishing to connect then simply goes to the multiplayer menu, chooses MineThrough in the top right, enters their friend's username and chosen server password and hits join.

This mod uses TCP NAT Punch-through to make connections and in rare cases can be unpredictable on whether a connection will work. In most cases it will work without problem. However if you are having issues try connecting a couple of times to ensure that a connection was attempted. If after a couple of tries the connection is still not working, try restarting the game and changing who is hosting. If this still does not fix your problem, message me and I will attempt to catalog what systems tend to have an issue with MineThrough and will attempt to fix them in future updates. When messaging me please include the following information:

The username of the player you are trying to connect to
The make and model of your wireless router
The make and model of your modem
Your internet service provider (ISP)
The operating system you are using

Feel free to include in any modpacks, just let me know so I can check out your pack!