Problem configuring NAT to share Internet Connection

Hi all...

I spent too much time trying to configure NAT in Windows Server 2003 to let
other LAN PC's to connect to Internet through the server without success.

This is the scenario:

1.- Window Server 2003 machine with 2 NIC's, NIC A and NIC B.
2.- NIC A is connected by mean of a UTP cable to a DSL modem. I have
assigned NIC A this IP address: 10.0.0.1
3.- NIC B is connected to a hub. I have assigned NIC B this IP address:
192.168.0.1
4.- 2 PC's connected to the hub. Their IP addresses are: 192.168.0.2 and
192.168.0.3
5.- Server is a domain controller and all LAN PC's are joined to the domain.
6.- LAN works perfect.
7.- To connect server to Internet, I create a new network connection. So,
finally I have 3 network connections, 2 corresponding with NIC A and NIC B
that were configured automatically when I installed operating system. The
3rd. connection corresponds the connection to my ISP, that assigns a dynamic
IP each time I dial it.

This was what I did:

1.- Installed RRAS/VPN server role.
2.- In MMC console, under network connections node I can see some
connections. 2 corresponds to the NICs A and B and other, named Internal, I
think corresponds to the DSL modem.
3.- Since I need RRAS to demand dial my ISP, I created there a new network
interface using the same name as in Network Connections in control panel.
4.- When the new interface appears in the list, it says that it is
unreachable. I try to connect but it says that modem is being used.
5.- I was already connected to Internet so I disconnected
6.- I tried to connect that interface again using RRAS console and it cannot
due to time out.
7. I tried several ways, using all the wizards and manually, but I cannot
make it to work. Only server could browse internet, but not client computers.

Any help will be greatly appreciated. My main problem is that I connect one
NIC to a DSL modem that assigns a dynamic IP.

Thanks a lot in advance,
Jaime

.

Relevant Pages

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