I ran into an issue recently where I was configuring a new Remote Access VPN. The Cisco VPN client would connect successfully. However, I could not access any resources on the LAN behind the firewall.
The termination point was an older PIX 515 running IOS 8.0. I was using the latest version of the Cisco VPN Client software, which was running on Windows 8.1.
In my particular case I had the following line in my config:
NO CRYPTO ISAKMP NAT-TRAVERSAL
This line was singlehandedly preventing me from accessing internal LAN resources. To fix this [Read more…] about Cisco VPN, connects but cannot access inside resources.