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configuration of dns

By sag_nag_reddy ·
dear sir,
our company is small and we have currently 30 users.recently i have configured dns and dc on same server with private ip.i also configured juniper 5gt firewall.on firewall i configured public ip for dns server.now the problem is when i test my dns from outside network with nslookup it is also showing internal ip.so how to hide that one.can u help me .

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by natecasp In reply to configuration of dns

Windows 2000 DNS can be configured as an external (Internet) DNS server or an internal (intranet) DNS server. Usually it is configured for internal clients so they can locate the Active Directory Server and other internal systems.

In this case the only way to have the internal DNS records remain seperate from the external DNS records is to create 2 zones. One zone would be yourcompany.local and the other would be yourInternetdomain.com. This way only the external DNS zone is used and you can secure the internal DNS zone.

However this way is still not secure and since Internet users can access the server through DNS and potentially get to the internal addresses. Therefore the correct way to implemnt this solution is the use of 2 DNS servers, one for internal and one for external.

Check out this Microsoft document:

http://www.microsoft.com/resources/documentation/exchange/2000/all/reskit/en-us/part2/c04names.mspx

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