I have a TMG 2010 Standard SP2 RU3 installed, latest and greatest. Everything was working 100%, I use PPTP VPN through my TMG Server to an external VPN server and this works.
I got a new work laptop and they require Cisco anyconnect VPN client, which would not connect through my TMG, even though I have a rule that allows all outbound traffic.
So after reading I created a bogus site to site VPN and then my cisco anyconnect VPN was working however my PPTP passthrough now dont' work...this was a bug with TMG that was supposed to be fixes with SP2RU3 but it didnt.
I would really appreciate it someone could advise me on how to get IPsec and PPTP passthrough a TMG Firewall, at the moment I plugged my ISA 2006 Server in as the allow outbound all protocols rule works properely and I dont have issues.
ITs amazing, I made a rule and listed it at the top, Allow outbound, all protocols in ISA 2006 and TMG 2010, ISA 2006 I have no issues and can connect both VPN, but TMG 2010 no the same......
This document refers to ISA 2000, I have resolved my problems by removing TMG 2010 and putting back my ISA 2006, one rule allow all Outbound and I have no problems. I have also found TMG 2010 provides really slow web browsing and have concluded that TMG 2010 is an unfinished product and will continue to be which is a bit of a shame.