Second nic required for VPN when using router?

[TRUCK0321]

I'm using a Netopia 9100 router setup to accept VPN connections. I am running Windows 2000 small business server with one nic and a static ip address with the DNS server pointing to my isp's DNS. All the other workstations get served ip addresses by the router. If my server needs to accept a VPN connection from the router, do I need a second nic card or is that only if I'm using the server as a router? If I do not need a second nic then why is it that when I try to connect from outside I connect for an instant and then I'm disconnected. The router log says "pptp connection established" and then right after says "data protocols all down." I setup the VPN manually using microsofts article. I also setup the netopia accordcing to their instructions. I know this is a lot to chew on but can anyone help out?
Thanks in advance,
Darin

 

[MattWray]

Well, first are you trying to connect to the router or the server? You say you set up the router to accept VPN connections, but I think you need to be port-forwarding them if you are trying to connect to your server....

Thanks,

Matt Wray
MCSE, MCSA, MCP, CCNA

http://www.sss-steel.com

http://www.total-tec.com

 

[TRUCK0321]

I'm not sure which is better, connecting to the router or the server. I don't know if the netopia router can handle more than one concurrent session, and if it can't, than I would rather use port forwarding to connect to the server. So, in that situation, would I need another NIC card? When I connected via vpn internally it disconnected my pc anywhere connection so I'm guessing I need another nic card but maybe I didn't set up the vpn correctly.