Configuring Multiple Nic Cards/Behind Firewall

[Guest]

I am trying to set up a VPN using the RRAS and two network cards in one Win2
Advanced Server Box. The problem I am immediately having is the binding of
the two network cards. I am recieving the Windows System Error 50 or in the
event viewer I am getting the The server couldnot bind to the transport
\device\nbf-{EC7EF8E7-84EA-4305 etc. because another computer on the network
has the same name. The server could not start. I check on the Microsoft
knowledge base site and discovered what I thought was the cure which was
adding the primary and secondary WINS addresses to the second NIC or is this
case the NIC with the more complicate configuration or route. The
configuration is the following:

NIC ONE Card Setup is as follows:
Local Area Connection/Properties/TCP/IP/Properties
Obtain IP Address Automatically
Obtain DNS Name Automatically
DHCP Enabled
Wins 192.168.0.55
NIC 1 IP Address is 192.168.0.55
Subnet Mask Address 255.255.255.0
Default Gateway 192.168.0.1
TCP/IP Properties Advanced WINS Tab 192.168.0.55

DHCP Turn(On) Actiontec 1524 Wireless Modem
DHCP Turn(On) Win2Advanced Server Exclusion 192.168.0.55

NIC 2 Card Setup is as follows:

VPN Connection/Properties/TCP/IP
Static IP Address 70.57.18.97-101
Use the following IP Address 70.57.18.98
Subnet Mask Address 255.255.255.248
Default Gateway IP Address 70.57.18.102
Wins Tab Primary 192.168.0.55
Wins Tab Secondary 70.57.18.98
Use the following DNS Server Address
Preferred DNS Server 205.171.3.65
Alternate DNS Server 205.171.2.65
DHCP Disabled

Questions: Do I need to enable the DHCP on the second NIC card. Also, I
understand what DHCP does but I am somewhat confused by the fact that you can
setup DHCP on the Actiontec Router/Modem and also have it installed on the
Win2Advanced Server.
I understand that you can only have one true default gateway but I presume
that the firewall where the router/modem exists is the default gateway.

Question: When I installed the second NIC card do I need to create a new
scope in the DHCP Win2Advanced Server for the static IP address
70.18.57.97-101.

Thanks,
Robert

 

[Bill Grant]

Why are you trying to set up a public IP on the server if it is behind a
firewall? The natural way to handle this situation is to leave the server
with just its private IP on one NIC. You use the port forwarding ability of
the firewall/router to enable it to act as the public interface for your
network.

So just use the one NIC in the 192.168.0 subnet with its default
gateway set to the firewall. Enable remote access in RRAS and test that you
can make a VPN connection to the server from a local LAN client. When this
works, forward TCP port 1723 from the firewall to the RRAS server's LAN IP
(192.168.0.55). Now try making a VPN connection from a remote client to the
firewall's public IP (or FQDN).

If all goes well, the VPN connection will be established to the RRAS
server, because the firewall will forward the traffic (just as a firewall
can forward HTTP to a web server on the LAN).