Hello,
If you will like to use SSTP based VPN server (which is part of RRAS server in Windows server 2008) behind a ISA2006 Firewall, please refer to following articles – Thanks a bunch to Thomas Shinder
http://www.isaserver.org/tutorials/Publishing-Windows-Server-2008-SSL-VPN-Server-Using-ISA-2006-Firewalls-Part1.html
http://www.isaserver.org/tutorials/Publishing-Windows-Server-2008-SSL-VPN-Server-Using-ISA-2006-Firewalls-Part2.html
Samir JainSenior Program ManagerWindows Enterprise Networking
[This posting is provided "AS IS" with no warranties, and confers no rights.]