I have a problem, we are trying to connect to a PPTP server from behind a M590 cluster, I have the PPTP rule in place and I see the allow attempts while Im trying to connect - but connection never get established, instead it ends with misc errors.
Windows 10 client with bulit in PPTP VPN setup.
If I instead use a 4G modem, I am able to connect (!) without any issues.
What could be the issue?