We have in our organization the following setup:
Both ISA and PIX are doing NAT...
With PIX version 6.3.x pptp from the inside network to the internet was working fine with fixup pptp on the pix. When we first upgraded pix to 7.01 pptp stopped working completely. With 7.02 the first time a new connection is established but all connections after that fail. I have inspect pptp setup on the pix. Cisco stated that they fixed pptp passthrough in 7.02 but I'm not sure.
Does anybody have any similar experience with this ?