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How many NICs needed for Small Business Server 2008?

Posted on 2009-05-07
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Last Modified: 2012-05-06
Hello:

I've been using Windows SBS 2003 with 2 NICs in the server. One Nic connects to the Internet (plugged into the router) and the other for internal NAT (plugged iinto a switch with all the other computers). I can understand this topology-the server serves as a gateway to the internet.

I am upgrading to SBS 2008. Some network diagrams show only one NIC for the server is need, in which all the workstations and the server are plugged into a single switch along with the router. And I was told that SBS 2008 can't be used as a gateway (true?)

My goal is to use the SBS as DHCP server to provide both internal network service and the internet service for the workstations.

What I am not clear is how only one NIC in the server worksto access the internet. A workstation gets an IP from the server and gets on the internet throught the router? Would I just use the router's IP as the gateway in the DHCP assignment option?

I'd really apprecite if someone could clear it up for me. Thanks so much!
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Question by:acmeglue
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Lee W, MVP earned 500 total points
ID: 24333547
The simple answer is: Get an appropriate firewall/router and then use the wizards.  The wizards will configure everything for you - and when the wizards configure everything for you, you have a MUCH better chance of having a STABLE installation.

In short, you use the router as the router for EVERYTHING - SBS 2008 does not support the same two NIC configuration that SBS 2003 did.  Can you set it up?  You should be able to - but you'll be violating best practices and reducing the probable reliability.
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by:acmeglue
ID: 24342219
Leew, thanks for clearifying. I configured the server as recommend and it works. The only thing is that now any computer that plugged into the switch gets assigned an IP address and has access to the internet without having to logon to the domain. It's not a big deal but i am wondering if that's the way it is or if there's a way not to give IP addresses to non-domain users? thanks a bunch!
What I did:
- disabled router DHCP
- gave the server a static IP
- enabled DHCP on the server and set router as the gateway and used both the server and the router as DNS servers.
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by:Lee W, MVP
ID: 24342253
The SBS 2008 WIZARDS would have automatically configured the router if the router supported UPNP.  

Internet access is always possible, regardless of logon to the domain - even in SBS 2003 (unless MAYBE you were using SBS 2003 premium - which uses ISA - standard edition does not include that and SBS 2008 removed it entirely on both editions).
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by:acmeglue
ID: 24342731
thanks for all your help!
ciao
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