VPN connections with whonix

Hi, I have read all about using VPNs in whonix, but I have been unable to successfully connect to one.
I have the option of using PPTP,L2TP or IPSEC (not OpenVPN), and I know that all of these may not be possible.
Every time I try to connect to such services the connection breaks, connecting without using whonix works fine.
Anyone care to tell me their experiences about VPNs in whonix?

Do those support UDP?

Lot’s of people are capable of using VPNs and Whonix using OpenVPN. Just search the forums.