I have a problem with a VPN tunnel which works partially.
For your understanding I will explain the context:
I have two routers in the network, one used as a gateway (router 'A' – IP 192.168.0.1) and one for creating the VPN tunnel (router "B" – IP 192.168.0.30), both have public addresses on the WAN and both have the LAN interface connected in the same network.
IP address allocation is done by a SBS W2K3 server.
All workstations have the router “A” as gateway and are in the same class
When the VPN tunnel is up I can not reach from outside the local network workstations (IP 192.168.0.3 - for example), I can see only internal IP router “B”, although the tunnel is passed all class configuration addresses (Local Security Group Type : Subnet )
When I change the configuration of a workstation and put the router "B" as gateway instead of "A" everything goes OK.
The same symptoms are when I try to forward a external port to an internal IP.
I think is a bug in the firmware.
I have the latest firmware 220.127.116.11-tm