Problem in DNS
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Thread: Problem in DNS

  1. #1
    Did someone said Pizza :) FanacooL's Avatar
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    Angry Problem in DNS

    Hi!
    One of my client machine running windows XP is resolving the DNS entries of the local domain wrongly, whenever i try to ping any other machine on the network i get timeout from a specific IP 93.191.141.136 which is not a part of my DNS entries. Furthermore all the entries on this particular client machines are fine, i mean its reflecting to my DNS Server.

    When i run nslookup i get all the results for queries fine, the problem pertains to this particular machine only. Furthermore when i stop the dnscache the system resolves the DNS entries to correct IP which means the problem is in the DNSCACHE. I have used flushdns to delete the entries but no effect.

    Only the system works correctly when the dnscache is Stopped, my query is why i am facing this issue, how it can be resolved and is there any local file where the dnscache entries get written so if i can remove the wrong entries from there.

    F A N A
    One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man!

  2. #2
    Just Another Geek
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    Did you check the hosts file?
    Oliver's Law:
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  3. #3
    Did someone said Pizza :) FanacooL's Avatar
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    couldn't find anything there! they are intact!
    One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man!

  4. #4
    Only african to own a PC! Cider's Avatar
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    hi there,

    Besides the hosts file I cannot think of anything else. Is DNS working on the other machines in the network correctly? Maybe a user has misconfigured the settings or installed a rogue DNS server.

    I'm sure SD can give some more suggestions.
    The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.
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  5. #5
    Did someone said Pizza :) FanacooL's Avatar
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    well every other machine is fine and getting the correct entries, its surely the dnscache thing making issue but why no idea..... BTW is there a way i can permanently turnoff the dnscache till the issue resolved.
    One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man!

  6. #6
    Only african to own a PC! Cider's Avatar
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    Hi there,

    Have a look at this.

    This is client side so it will only affect the one machine.

    http://support.microsoft.com/kb/318803



    basically net stop dnscache
    The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.
    Albert Einstein

  7. #7
    Just Another Geek
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    It's a bit of an oldy but you might want to check if the patch was actually installed.

    http://www.microsoft.com/technet/sec.../ms07-062.mspx

    Also check ipconfig /all especially the DNS suffix search list and the Connection-specific DNS suffix.
    Last edited by SirDice; January 5th, 2009 at 12:21 PM.
    Oliver's Law:
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  8. #8
    AO's Filibustier Cheap Scotch Ron's Avatar
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    check the DNS cache registry entries. There's a popular hack promoted to "tweak" performance by changing the settings. Restore them to default values if they have been changed. Here's a link to the hack

    http://www.computerworld.com/action/...icleId=9019951

    CSR
    In God We Trust....Everything else we backup.

  9. #9
    Did someone said Pizza :) FanacooL's Avatar
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    Quote Originally Posted by SirDice View Post
    Also check ipconfig /all especially the DNS suffix search list and the Connection-specific DNS suffix.
    Just found one thing in DNS Suffix Search List here i can see one of my old DNS Server which is no more in the domain, i am bit strange how come the client showing this entry.
    One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man!

  10. #10
    Just Another Geek
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    Quote Originally Posted by FanacooL View Post
    Just found one thing in DNS Suffix Search List here i can see one of my old DNS Server which is no more in the domain, i am bit strange how come the client showing this entry.
    It's probably been added by hand. In the TCP/IP properties of the interface you'll find an "Advanced" button. Have a look at the DNS tab, I'm sure it's been added there.
    Oliver's Law:
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