NAT not giving clients internet access

Hewlett-packard Microsoft windows server...
March 26, 2011 at 09:13:02
Specs: Windows 2998, 1222
I have a test LAN, a 2008 Svr with 2 NIC's DC with AD,DNS,DHCP, Routing/Remote Access

NIC 1 = - - NO Def Gate - preferred DNS

NIC 2 = Obtain ip address automatically = preferred DNS

the clients = WinXP and Win7 are not getting internet access, DNS, DHCP are all working. I can not ping any outside web sites, but can ping other clients and the Svr. Everything seems to be setup correctly, what could be the problem?

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March 26, 2011 at 13:14:04
Have you set a gateway in the DHCP options? Without a gateway the clients are never going to be able to get beyond the local subnet. Also, you don't need to define the preferred DNS server on the client. Set it as one of the DHCP options. (You don't actually say what range of addresses the DHCP server is serving.)

You can check by doing an ipconfig on one of the clients and checking whether it has a default gateway.

Is there a reason why you are using a netmask of, rather than

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March 27, 2011 at 13:41:04
Usually you refer to nic2 as the nic facing the lan and nic1 as the one facing the wan.

As long as your "optain ip automaticlly" is from your isp or router and it is a different subnet then the one for lan you are fine.

Did you remember to set your dns server forwarders with the isp's dns ips? You need that for windows dns to forward internet requests to the isps dns servers. is fine unless you wish to exceed 14 hosts on the lan side. After that.... you won't be able to add any more hosts until you change the subnet mask.

It is normal and correct to not have a gateway entry on the lan side of the server if running rras or ics.

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April 2, 2011 at 08:06:49
i got the NAT working, clients are now getting internet. I used for small subnet.

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