Host wins.ceng.metu.edu.tr Port 8083 Preferredauthentications publickey IdentityFile ~/.ssh/id_ed25519 Host xyz Port 22 HostName yigitsever.com User yigit Preferredauthentications publickey IdentityFile ~/.ssh/id_ed25519 ServerAliveInterval 180 Host metu Port 8085 HostName external.ceng.metu.edu.tr User yigit ServerAliveInterval 120 Host *.labs.overthewire.org SendEnv WECHALLTOKEN SendEnv WECHALLUSER