[RESOLVED] NAT not nice

I am so agonizingly close to getting this to work..:-/. I am running windows 2k server. I have two networks cards installed named internal and external. The external card is configured with the static IP, subnet and gateway from my ISP. I can browse the internet fine on my server UNTIL I enable NAT. The second card is configured at 192.168.0.1 with 255.255.255.0 as the subnet and the ip address of my external card as the gateway. As soon as I enable NAT, i lose all internet connectivity. I've tried using the built in DHCP with NAT, I've configured DHCP on the server and used that and I've also tried static configurations. I have DNS installed, but it's just acting as a forwarder to my ISP. There has got to be something simple I'm missing. If I pull the second card out of the computer or disable RRAS, I get internet back on the server. Thanks in advance for any help,

Silk

Maybe the gateway should be the internal nic (192.168.x.x)?

On my home network, the machines use dhcp from the firewall/router to get their ip address. They always show the internal ip as the gateway, not the external ip. The ip address assigned from the ISP is probably dynamic.

Have you tried enabling internet connection sharing? You can manually configure your NICs for NAT and shared access but the hang up always seems to be the routing table. I haven't used 2000s ICS enough to know exactly what is supposed to be in the routing tables but I can tell you that it's easier to let ICS set this up than it is to configure it manually... am i repeating myself? i need coffee.

I got it working finally! I'm still not quite sure exactly what was wrong, but when I blew out the whole RRAS setup and did it again selecting internet connection sharing instead of manual configuration, everything worked. I've been through everything in the MMC and can't see a single thing different, but..shrugs, oh well. it works..hehe. Thanks for all the suggestions guys!

Silk

ICS is pretty weak compared with pure NAT through RRAS. If I were you I'd make sure ICS was disabled and try resetting up RRAS, it should work fine the way you said in your first post. I know its possible because I am running DNS (forwarding), DHCP, and RRAS NAT on my Windows 2000 server and it works perefectly.