So a friend who plays games on the Xbox contacted me about getting hacked constantly when playing his multiplayer game. (NBA 2K20 )
I went over to his house a few times installing linux and using a machine to take the bridged connection from his ISP to split the connection for the home equipment and a second machine running pfsense with the Xbox behind that 2nd machine.
We’ve both now tried using VPNs and disabling multicast traffic and also only allowing established traffic… and a few other things along the way we we’ve rebuilt his network multiple times as the network would get booted offline. I think his modem may be leaking traffic somehow but I thought having a VPN up before connecting the Xbox to the network would affect that as well as a VPN in Europe.
Sunday we finally set up the main modem-bridged to modem as a DoH client and also set up a ntp client service. Things seemed to be more stable and we also had the ufw running to only allow the set xbox ports (from Microsoft) through with (vpn off) only traffic from the US allowed (on the pfsense machine).
Last night he messaged me that he got a message during game play that said “Goodbye! :-)”… a min later his network icon stopped working on the ubuntu gateway and he was offline again.
I know there must be gamers on here who have dealt with some of this stuff before and wanted to find out what your solutions have been?
Thanks in advance.
[Edited to add the game name]