Kerbal Dark Multiplayer on Linux

[StormxWolf]

Hello! Long time lurker, first time poster here.

I've found myself in quite a special situation and I was hoping some linux users could help me out here. I have a mid range PC I'm trying to run a DMP server on and the server runs well, it works fine. As of right now I use TMUX to run the server outside of the terminal window The problem comes in when I try to run the server headless. I use putty to SSH into my server and the server ONLY allows NEW connections when putty is connected. If I or anyone else connects before I close the SSH window the connection is maintained. The specific error that DMP spits out is "handshake error: invalid username". This post was kind of jumbled so if I can provide any info that might help please just ask. I hope that someone here can help. Thanks everyone.

[radonek]

What distro is it? Is sshd configured to use PAM? Sounds like some security model in action (SELinux, AppArmor…) or maybe yet another systemd "feature".