2003 - Weird dial demand vpn problem

[Guern]

Hi,

I setup a vpn using windows 2003R2 routing and remote access/nat.

Both vpn servers can ping anything either side of the network.
Side 1 can ping anything side 2 of the network
Side 2 cannot ping anything on side 1 of the network

It's as if a filter (NAT maybe) is making it so that comminication can only initiated from side 1

Side 1 is configured as 192.168.0.x
Side 2 is configured as 192.168.7.x

2 way communication must be possible, else side 1 could not ping and get replies from hosts on side 2, but side 2 cannot ping to side 1. It's very strange! Pings from side 2 get as far as the side 1 router but go no further.

Only windows basic firewall is enabled and that has the PPTP forwarding on. No firewall is enabled on the private interfaces.

Anyone got any ideas?

Thanks.

 

[msworld]

Sounds like routing issue. Posting the both VPN servers' routing tables here may help. Or check these search results,

routing issues on vpn
Can ping VPN server only but not other resources Can't access the internal server when remote client establishes VPN Can't access the Internet while using ...

http://www.chicagotech.net/routingissuesonvpn.htm

- Similar pages

Can't ping remote computers
VPN client can ping server only The VPN client can ping the VPN server without problem. ... The ipconfig /all display both NICs’ IPs are in the same IP ...

http://www.chicagotech.net/casestudy/notpingvpn.htm

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on

http://www.HowToNetworking.com