I am facing a problem in Site to Site VPN.
There is only an IPSEC VPN between 2 sites where all LAN to LAN traffic (TCP and UDP) is included in the CRYPTO ACL.
Also note that there is a GRE Tunnel between the 2 sites, on which the Crypto map is applied.
All kind of communication is working successfully between the 2 sites except for the ISA Client connectivity.
There is a special Application over the internet that needs users to connect to the ISA server using the ISA client at the user side. When applying the CRYPTO MAP Over the GRE TUnnel, the ISA client is unable to Connect
When removing the Crypto MAP, the Isa Client is able to connect successfully
I tried to change the Transform Set and Phase 1 settings, but still same problem
Has anyone had a similar problem?