We use the Cisco VPN client to access 3 client VPN’s. Two of three do not make the connection when being accessed by computers behind a W2K3 server which is configured with 2 nics and running NAT but do connect OK from a workstation with a public IP. We can connect to the 3rd VPN from computers whether they are behind the firewall or not. Since it seems a port issue would affect connecting to any VPN, I’m assuming the issue must be with the way our clients have their VPN’s configured but don’t know where to start. Any ideas ??