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DNS question

paulmmalone
paulmmalone asked
on
Medium Priority
480 Views
Last Modified: 2010-03-19
I have a Windows 2003 SBS running DNS services for a small 10 user office.
I am almost positive it is not working correctly.  Becuase when I use a client pc with the internal dns ip address 10.92.1.3
I have not internet connectivity.  When I use an external dns entry I am able to surf.

Does anyone know a simple DNS tutorial for setting up a 2003 Server running active directory?  
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Enterprise Architect
CERTIFIED EXPERT
Top Expert 2008
Commented:
On your DNS server, look in the DNS service.
Have you set up the Forwarders section and put in your ISP dns IP addresses? The Forwarders tell the DNS server where to send requests when it does not know the answer itself.

The DNS server should have its own DNS (in the network card advanced section pointing to itself.

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You should try to confirm whether DNS resolution is working.  From a command prompt on the client try to ping an external host eg www.google.com.  If it is able to convert the host to an IP address DNS resolution is working ok and you have an alternative problem.

You should confirm whether you have a proxy configured in IE on the workstation, also your firewall rules could be preventing web browsing.
Sridhar CherukuriService Engineer

Commented:
Yes thats correct add the primary and secondary DNS IPs in forwarders. (Open DNS from Administrative tools, right click on the server name and select the properties and click on Forwarders tab and add your external dns ips) and in your client give the local server ip in primary DNS.

Author

Commented:
Thanks for responsing.  I appreciate the help.

In my forward lookup zones.
I have two zones setup.

_msdcs.mylocaldomain.local   and
mylocaldomain.local

In my advanced TCP/IP properties under the DNS tab
I have two dns servers.  one local and one external
I don't have a DNS suffix for this connection though

Author

Commented:
I can surf fine.  I am using my external DNS server.
I can't ping google though.
It resolves it to an external ip address.   Google might have set up so we can't ping them.
Yes it is ok that you don't get a reply form the ping.  The fact that it resolves to and external IP indicates that your DNS is working ok.  Can you surf from the PC as well as the server?
Sridhar CherukuriService Engineer
Commented:
remove the external dns in your tcp/ip properties in the server and add the external ip (dns ip) in forwarders and give the local server ip address as a primary dns in each of your client pc.
Keith AlabasterEnterprise Architect
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Top Expert 2008

Commented:
Already suggested that so I assume it did not work :)

Author

Commented:
Haven't tried adding the external DNS in the forwarders section yet.

Do I add that as a "New Host (a)", New Alias (CNamer), ect.

Does it matter what I name it?  NOt sure how to do that
You add it under the server properties.  There is a specific field for it.  You are not adding it to a zone so you will not be asked for a record type.

From Cherukuri30s post:
Open DNS from Administrative tools, right click on the server name and select the properties and click on Forwarders tab and add your external dns ips
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
Thank you :)

Author

Commented:
That fixed it.  You guys rule.
The PCs in my office are now logging in to the network in 30 seconds instead of 3 minutes!!
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
LOL. Welcome and pleased to hear it.
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