Routing IP with NT Server 4.0

[AWehrstedt]

I need help setting up the IP Forwarding on my NT Server. I have 2 NICs in the server, one connected to a cable modem getting a dynamic IP, and the other with a 192.168.0.1 address.

I want the other machines on the LAN to use the Server as a gateway so they all can get internet access.

I turned on the "IP Forwarding" checkbox in the network properties, the server has internet access, but the other machines on the network don't. I talked with someone and they said to install the RIP service, which I did..but they still do not get internet access.

The other machines on the LAN are all W2K professional.
I've also heard I can make a static routing table on each server, but I have no idea how to do that.

Any help would be great!
Thanks in advance,

Andrew

 

[AWehrstedt]

I must add that the server is also running as a web server so it needs to have the live IP address on it. I considered buying one of those Cable\DSL routers, but I don't think I could get the webpages to run (it is a development web server so there are sites on a lot of different ports).

Thanks again,

Andrew

 

[djnitrous]

I'm almost on the same boat as you Andrew.

Got Windows NT4 Server with 1 NIC for the network and a Modem for Internet Access.

And I'm trying to get my Windows9x machines to go thru it as at gateway as well.

I have found that If your using Windows2000, you just need to turn on 'Enable Internet Sharing' and its a EASY!!!! as that. But it doesn't look that easy in NT4.

David, djnitrous@hotmail.com

 

[AWehrstedt]

Yeah I used to run a W2K server and used Internet Sharing..and it was great. Very simple.

Found with my server it froze if I tried to upgrade it to any of the W2K Service Packs or latest critical updates..so decided to go back to good old NT 4.0.


A friend said it shouldn't be a problem to use IP forwarding, but I haven't found that so far.

Andrew

 

[djnitrous]

That's what I found. W2k so easy to get setup and going. But I'm still way lost in NT4 on doing the same thing. I've even gone to trying out WinGate 4.4 with NAT support to see how we go.

I'm still very lost.

 

[ARoethenmund]

Hi

Just a question: Hou can you run a Web-Site on this server when you use dynamic IP? Where is your DNS-Server? How does it handle this? And you can't use static routing, if your server is given a dynamic IP.

Talk to your ISP to get a static IP and everything will work fine.

If you want to add a something to your static routing table, try on the DOS-Prompt route add /? This will give you further information.

Andreas

 

[AWehrstedt]

Well technically you can't run a site with a dynamic IP, but because I'm on a cable modem connection, and always connected, my IP address has only changed once in the past year..when it does change I just have to make a few tweaks, and within 24 hours at the latest, all sites are back online.

All the sites run great with the dynamic IP, I just need the internal computers to go out on the second card of the server (connected to the cable modem). They just don't seem to want to talk to it.

Andrew

 

[wybnormal]

It is possible to run a site on a dynamic IP... there are a few companies that use a type of PING and then modify the DNS entries on the fly for you. It's fee based but fairly cheap since some ISP refuse to provide static IPs.

http://www.tzo.com/

MikeS Find me at

http://www.packetattack.com

"Diplomacy; the art of saying 'nice doggie' till you can find a rock" Wynn Catlin

 

[lorenm]

We ran an NT 4.0 multihomed machine for our network for a couple of years and it worked great! However, we had static IP's as opposed to your dynamic.

Frankly, dynamic sounds like a pain (At least on NT 4.0), I recommend trying to get a static if you won't go for Win2k. As far as the setup goes, check subnet masks and the like. Where exactly can you ping to from a workstation on the LAN side? Can you ping the outside (WAN) NIC in the NT box? Also check the Bindings on the NIC's. We had to isolate certain protocols etc. to specific NIC's. Sometimes NT gets a lil confused as to which card is which.

Lastly, since you have a dynamic IP and are trying to share this with a bunch of machines, don't you have to use NAT? As we had a block of static IP's this was never an issue but my understanding is that in order to share access without giving everyone their own static IP's, you must use NAT.

Hope this helped. Good luck.

-LJ