Second network card in NT4 Server

[erme]

We have a small network running from an NT4 server via a hub using private IP addresses and currently use a modem to dial up to the internet. We are installing a cable modem and would like to connect it to the server. We have added a second network card and want to allow it to obtain an IP address from the DHCP server at the ISP, although the "radio button" is greyed out? Do I need to disable the first network card?

Can anyone help?

 

[angerdriven]

why not use a cable/dsl router? it will provide a little security for your network seeing that your internet will now be 'always on'. all your systems will still be on private ips too. this way you can stick to the 1 nic.

 

[TheOldMan346]

erme,

No you should not need to disable the first interface but make sure you are trying to configure the second interface.

What you are essentially doing is using the NT4 server to "share" the internet connection. You will need to do additional work to make this work. See the info here

http://www.practicallynetworked.com/sharing/ics/ics.htm

Good luck.
The Old Man

 

[xiaxia0053]

if you disable the frist card ,how could others connect internet.
you can do it like that the frist use the private IP
and the secend use the DHCP with shelled connect to internet

 

[globalstrata]

One of the network cards should not have default gateway defined. You will have to use the route command to configure where packets go to.

IE:
Configuration on the machine
NIC1 172.20.30.20 Subnetmask1 NoGateway
NIC2 DHCP

Then use the route command as follow:

route -p 172.0.0.0 MASK <subnetmask1> <InternalGateway> 172.20.30.20

If not internal gateway, use the interface as the gateway (172.20.30.20)



Gladys Rodriguez
GlobalStrata Solutions

http://www.globalstrata.com

 

[erme]

Thanks for all of the help from everyone, but could I ask one more thing?

We have installed and correctly configured the NIC as the second NIC. The ISP have said that the NIC attached to the cable modem needs to obtain an IP address from the DHCP server, but the NT4 server it is running on is the primary server - is this possible? I have been told that a PDC cannot optain an IP address from an ISP DHCP server and that is why it is &quot;greyed out&quot; in the network setting?