I have recently relocated and the network I have been provided blocks every outgoing TCP port except for
80 (http) 443 (https) 465 (smtps?) 587 (submission) 993 (imaps) 25565 (minecraft?) 27014-27050 (steam?)
In a possibly misguided attempt, I have tried using
sshuttle to redirect all of my traffic. It still wouldn't let me connect to the VPN.