DNS Server Cache Snooping Remote Information Disclosure

The remote DNS server responds to queries for third-party domains that do not have the recursion bit set. This may allow a remote attacker to determine which domains have recently been resolved via this name server, and therefore which hosts have been recently visited. For instance, if an attacker was interested in whether your company utilizes the online services of a particular financial institution,
they would be able to use this attack to build a statistical model regarding company usage of that financial institution. Of course, the attack can also be used to find B2B partners, web-surfing patterns,
external mail servers, and more.
Note: If this is an internal DNS server not accessable to outside networks, attacks would be limited to the internal network. This may include employees, consultants and potentially users on a guest network or WiFi connection if supported.

Please provide your recommendations
Yogesh_Exchange_ExpertAsked:
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Krzysztof PytkoConnect With a Mentor Senior Active Directory EngineerCommented:
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Yogesh_Exchange_ExpertAuthor Commented:
Actually i got this query from some one else can you please explain what is this risk in simple words
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Krzysztof PytkoSenior Active Directory EngineerCommented:
Is this internal or external DNS server(s) ?

Krzysztof
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Yogesh_Exchange_ExpertAuthor Commented:
internal DNS with windows server 2003. any thing we can suggest to make it secure.
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Yogesh_Exchange_ExpertAuthor Commented:
ok
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