[itdiscuss] DNS Issue

[Jeffrey Thompson]

Most likely this is a routing issue / DHCP Server issue.  You may have  
DNS Server turned on in a wireless router that isn't pointing to your  
internal DNS Server.  It probably handed out an IP address and gave it  
outside DNS Servers which for your domain was your website (or  
something).  You can turn off DHCP in the wireless router and let your  
Windows DHCP server be the only server to provide IPs to your  
network.  Or you can isolate your wireless router (if indeed the  
problem is your wireless router) into a DMZ, a separate network from  
your internal network by using a gateway into a different physical  
network (or VLAN) so the wireless router only responds to outside  
wireless machines or machines plugged directly into the wireless router.

That could be a possible scenario of your problem and a few possible  
solutions.

Jeffrey Thompson
JANOAH, INC.
President & CEO
535 Winkler Dr, Alpharetta, GA  30004
jeffrey at janoah.net
Work: 678-373-4157
Fax: 678-373-4283
http://janoah.net


On Aug 28, 2009, at 12:22 PM, Ray Tyner wrote:

> On Monday afternoon a number of my DHCP clients started losing their  
> connection to the servers on our second campus.  We have a mapped  
> “I” drive for a shared resource on our Windgate campus.  The first  
> computer I checked would not map the “I” drive when the user logged  
> into the domain.  She was unable to even browse to the server  
> shares.  I ran IPCONFIG and found that the ip addresses for our  
> internal DNS servers had been replaced by the ip addresses of our  
> external servers provided by out ISP.   This was the situation on  
> every problem client but not everyone has been affected.  I have a  
> workaround but am more interested in finding the reason for problem  
> as well as a permanent solution. We have been using this  
> configuration since January 2003.
>
> Ray Tyner
> Peachtree City UMC
> 678.642.3362
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