We have a VPN concentrator that has a L2L connection that connects our office with another location. We also have users connect into our office using the Cisco client. There has recently been a need for the users to VPN and access a network on the L2L tunnel but they can't access it. I'm having problems wrapping my head around what I need to do to allow this. Since they are both terminating at the concentrator it seems that the concentrator should know how to handle the traffic.
Have you included the VPN Pool of IP Addresses in the Lan to Lan Tunnel Interesting Traffic. Also, make sure that the remote site IPSEC ACL's and routing are updated after you make the changes on your side.
*Pls rate if it helps*