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DNS Problem

Posted on 2008-10-02
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Last Modified: 2012-05-05
I am able to see our internally hosted website by entering its IP address into the address field in any browser. I am unable to see this site by entering the FQDN or URL, however the site can be viewed from the public network or the Internet without any problem whatsoever. I am treating this as a DNS configuration issue but have had little success by creating a new zone with an entry for the mapping on the internal DNS server OR entry into my local lmhosts file. With the entry into the local hosts file the IP address is being resolved but the site is still not loading in the browser- any assistance will be greatly appreciated.
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Question by:colinkhan
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by:Cutshall
Cutshall earned 100 total points
ID: 22623943
Your DNS entry for your internal web site is normally WWW and that points to your website.  If you can see the website by typing the FQDN or URL, but you can see it using the ipaddress then I would definitely look at DNS as the issue.  If the public can see it then that tells me the DNS records are probably good.  Have your tried to ipconfig /flushdns then ipconfig /registerdns?
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by:Cutshall
ID: 22623958
Another thing I'm thinking is if you have an ISA server or Proxy Server that allows external addresses to the website port 80 or 443 depending on if you are using https.  You may have to punch a hole your ISA/Proxy server for local address.
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by:colinkhan
ID: 22624682
Did the ipconfig commands already, no luck with that.
With regard toISA/Proxy issue, all the other internal sites resolve fine and nothing was chaged on those machines.

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colinkhan earned 0 total points
ID: 22627014
Created a new forward lookup zone for the domain on the Active Directory forest. Adding the related A records solved the problem.
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