How do I disabled DNS Server Caching on windows 2008 server?

Discussion in 'DNS Server' started by chris, Oct 16, 2009.

  1. chris

    chris Guest

    chris, Oct 16, 2009
    #1
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  2. You can disable it for the client side resolver on all machines, including a
    DNS server's client side resolver by disabling the DNS Client service. But
    that does NOT affect the DNS Service itself. It's designed to cache any
    successful lookups it has resolved.

    The only thing I can think of is to reduce the MaxCacheTtl in the registry
    to zero (0). However I suggest not to do that, or the DNS server performance
    will be greatly reduced. This article shows you the setting:

    Microsoft DNS Server Registry Parameters, Part 1 of 3
    http://support.microsoft.com/kb/198408

    However, as said, I suggest to not disable it, and rather I strongly suggest
    to make sure your DNS server, and all other servers for that matter, are up
    to date with current updates and security hotfixes.

    --
    Ace

    This posting is provided "AS-IS" with no warranties or guarantees and
    confers no rights.

    Please reply back to the newsgroup or forum for collaboration benefit among
    responding engineers, and to help others benefit from your resolution.

    Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE & MCSA
    2003/2000, MCSA Messaging 2003
    Microsoft Certified Trainer

    For urgent issues, please contact Microsoft PSS directly. Please check
    http://support.microsoft.com for regional support phone numbers.
     
    Ace Fekay [MCT], Oct 16, 2009
    #2
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  3. chris

    chris Guest

    Hi,

    MaxCacheTtl is not found on a windows 2008 server?

    What should I do to disabled as one of my customer wanted to disabled?
     
    chris, Oct 20, 2009
    #3
  4. You can simply create it. It's a DWORD entry. The following article can
    guide you. Just set it to 0 instead of what the article speaks of, since
    that is a different issue.

    968372 Windows Server 2008 DNS Servers may fail to resolve queries for some
    top-level domains
    http://support.microsoft.com/default.aspx?scid=kb;EN-US;968372

    You can also test to see if it works. Prior to creating the entry, run
    Perfmon DNS counters for the cache, and save the logs. Then set it 0, and
    run another Perfmon log and evaluate the difference.

    Ace
     
    Ace Fekay [MCT], Oct 20, 2009
    #4
  5. chris

    chris Guest

    Hi,

    Thanks.

    Is there a command to test to verify it is working that cache has been
    cleared and registry has been configure sucessfully?
     
    chris, Oct 21, 2009
    #5
  6. You can simply put the DNS console into Advanced view, and look at the
    cache.

    Ace
     
    Ace Fekay [MCT], Oct 21, 2009
    #6
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