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SBS 2003 and Router DNS setup

Posted on 2006-10-20
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Last Modified: 2012-05-05
I am installing a new SBS 2003. I am also installing new router with static IP address. The router is connected to a DSL modem with static IP.

The router is also configured for DHCP. In the router, I plan to put the SBS 2003 Server’s IP address as the primary DNS server and the ISP’s DNS server as the secondary DNS server.  Would this be the correct configuration. ?

Also, when you run the configure Internet connection wizard in SBS it asks for the ISP’s DNS servers. Why would it do that I am using a router with DHCP.    
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Question by:netcomp
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7 Comments
 
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by:Don S.
Don S. earned 150 total points
ID: 17774961
I would not use the router to supply DHCP to my network.  The SBS server is much more capable and flexible in the IP settings it can set via DHCP than any router.  Are you going to install the SBS server with the recommended two NICs? - One for the Internet side and one for the LAN side?
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by:davino_1
ID: 17775973
In addition to agreeing with dons6728, I would also not reccomend the dns setup you have mentioned.  It is best to avoid pointing one dns server to external and one to internal.  If at all possible, throw dns on an additional server internally to use as a backup and then use root hints or forwarders.

SBS probably asks for th internet dns servers to automatically configure dns forwarders.
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Jeffrey Kane - TechSoEasy earned 350 total points
ID: 17780017
No, that wouldn't be the correct configuration.  You really shouldn't be using the router for your DHCP.  Your router should have your public static IP address, along with whatever DNS servers you want to put there... since they really aren't used anyhow.  All DNS must run through your SBS in order for your network to operate correctly.

Therefore, please follow the suggested configuration that you'll find here:  http://sbsurl.com/msicw

There is also a visual how-to for the CEICW here:  http://sbsurl.com/ceicw

Jeff
TechSoEasy

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by:netcomp
ID: 17808517
But, if I Use the DHCP on the server, then if the server is down, not only can't they access the data from the server, but can not also get online. So , How do I get the address of the internal DNS server (the 2003SBS) to the clients.  If I only put the address of the 2003 SBS as the only DNS on the router, then they may not get online since they are not getting the internet DNS address from the ISP. ?????
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Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17812017
You shouldn't plan your entire network around your server being DOWN.  Because the truth is, if you properly equip your server, install and configure it correctly, it will RARELY go down, if ever.

I've deployed close to 100 SBS Networks, and have yet to see this as a problem.

Jeff
TechSoEasy
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by:netcomp
ID: 17843965
Thank you all for your comments ,
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