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Q: Internetworking Routing

Hello, need your help on this one, please.

Setting:

Network A:
192.168.1.0 mask 255.255.255.0
Win2k VPN Server A is: 192.168.1.5

Network B:
192.168.2.0 mask 255.255.255.0
Win2K VPN Server B is: 192.168.2.7

Home clients config ("network C")
10.1.1.0 mask 255.255.255.0

Network A and B are connected with a 2-way PPTP VPN Connection through the Internet (i.e. Server A has a connection to server B, and server B has a connection to server A). Servers and clients on both networks have specific routes set to be able to connect to the other subnet through the respective servers.

Default routes on the VPN servers go to 192.168.1.1 / 192.168.2.1 (external routers/NAT to internet).

Everything works fine up to this point.

Now, when employees connect to Network A/Server A from home (VPN via internet), they are only able to reach all the hosts in network A, but no hosts in network B. A ping and traceroute only show "request timed out".

Manually setting a route on their clients for the remote network B does not help (e.g. route add 192.168.2.0 mask 255.255.255.0 192.168.1.5 metric 2).

Is there a way to accomplish that the remote clients can reach network A and B by just connecting to the VPN server in network A?

A: I had a case similar like this one. Based on that case, I wrote a how to http://www.howtonetworking.com/Networking/multiplerouters1.htm. To fix the problem, you may need route back to the VPN client. Post back with the result.

Bob Lin, MS-MVP, MCSE & CNE

Reply: Yes, Helpful websites.

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Cannot access other subnet using Windows as router