Hi all!

I would like to know how to permanently disable DNS caching on a
Windows 2000 machine. I would like it to be a perpetual "ipconfig
/flushdns" essentially. Every name to number resolution should contact
the DNS server. Any thoughts? Thank you!

Matthew Connor

(E-Mail Removed) wrote:
> Hi all!
>
> I would like to know how to permanently disable DNS caching on a
> Windows 2000 machine. I would like it to be a perpetual "ipconfig
> /flushdns" essentially. Every name to number resolution should contact
> the DNS server. Any thoughts? Thank you!

Two ways:
1. Stop and disable the DNS client service.
2. Add this to the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNSCache\Parameters
Value name: MaxCacheTtl
Data type: REG_DWORD
Default value: 86400 seconds
Value data: If you lower the Maximum TTL value in the client's DNS cache to
1 second, this gives the appearance that the client-side DNS cache has been
disabled.

Value name: MaxNegativeCacheTtl
Data type: REG_DWORD
Default: 900 seconds
Value data: Set the value to 0 if you do not want negative responses to be
cached.

How to Disable Client-Side DNS Caching in Windows XP and Windows Server
2003:
http://support.microsoft.com/kb/318803/en-us

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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Great piece of information. I'll be pasting that into my personal knowledge
base!

....kurt

"Kevin D. Goodknecht Sr. [MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> (E-Mail Removed) wrote:
>> Hi all!
>>
>> I would like to know how to permanently disable DNS caching on a
>> Windows 2000 machine. I would like it to be a perpetual "ipconfig
>> /flushdns" essentially. Every name to number resolution should contact
>> the DNS server. Any thoughts? Thank you!
>
> Two ways:
> 1. Stop and disable the DNS client service.
> 2. Add this to the registry:
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNSCache\Parameters
> Value name: MaxCacheTtl
> Data type: REG_DWORD
> Default value: 86400 seconds
> Value data: If you lower the Maximum TTL value in the client's DNS cache
> to
> 1 second, this gives the appearance that the client-side DNS cache has
> been
> disabled.
>
> Value name: MaxNegativeCacheTtl
> Data type: REG_DWORD
> Default: 900 seconds
> Value data: Set the value to 0 if you do not want negative responses to be
> cached.
>
> How to Disable Client-Side DNS Caching in Windows XP and Windows Server
> 2003:
> http://support.microsoft.com/kb/318803/en-us
>
> --
> Best regards,
> Kevin D. Goodknecht Sr. [MVP]
> Hope This Helps
> ===================================
> When responding to posts, please "Reply to Group"
> via your newsreader so that others may learn and
> benefit from your issue, to respond directly to
> me remove the nospam. from my email address.
> ===================================
> http://www.lonestaramerica.com/
> http://support.wftx.us/
> http://message.wftx.us/
> ===================================
> Use Outlook Express?... Get OE_Quotefix:
> It will strip signature out and more
> http://home.in.tum.de/~jain/software/oe-quotefix/
> ===================================
> Keep a back up of your OE settings and folders
> with OEBackup:
> http://www.oehelp.com/OEBackup/Default.aspx
> ===================================
>
>

"Kurt" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
> Great piece of information. I'll be pasting that into my personal
> knowledge base!
>

I pretty much always disable the DNS Client Service
on DNS servers which point to themselves.

Doing otherwise is wasteful of CPU, Memory, and actually
slows down resolution slightly for the DNS service.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

"Kurt" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
> Great piece of information. I'll be pasting that into my personal
> knowledge base!
>
> ...kurt
>
> "Kevin D. Goodknecht Sr. [MVP]" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> (E-Mail Removed) wrote:
>>> Hi all!
>>>
>>> I would like to know how to permanently disable DNS caching on a
>>> Windows 2000 machine. I would like it to be a perpetual "ipconfig
>>> /flushdns" essentially. Every name to number resolution should contact
>>> the DNS server. Any thoughts? Thank you!
>>
>> Two ways:
>> 1. Stop and disable the DNS client service.
>> 2. Add this to the registry:
>> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNSCache\Parameters
>> Value name: MaxCacheTtl
>> Data type: REG_DWORD
>> Default value: 86400 seconds
>> Value data: If you lower the Maximum TTL value in the client's DNS cache
>> to
>> 1 second, this gives the appearance that the client-side DNS cache has
>> been
>> disabled.
>>
>> Value name: MaxNegativeCacheTtl
>> Data type: REG_DWORD
>> Default: 900 seconds
>> Value data: Set the value to 0 if you do not want negative responses to
>> be
>> cached.
>>
>> How to Disable Client-Side DNS Caching in Windows XP and Windows Server
>> 2003:
>> http://support.microsoft.com/kb/318803/en-us
>>
>> --
>> Best regards,
>> Kevin D. Goodknecht Sr. [MVP]
>> Hope This Helps
>> ===================================
>> When responding to posts, please "Reply to Group"
>> via your newsreader so that others may learn and
>> benefit from your issue, to respond directly to
>> me remove the nospam. from my email address.
>> ===================================
>> http://www.lonestaramerica.com/
>> http://support.wftx.us/
>> http://message.wftx.us/
>> ===================================
>> Use Outlook Express?... Get OE_Quotefix:
>> It will strip signature out and more
>> http://home.in.tum.de/~jain/software/oe-quotefix/
>> ===================================
>> Keep a back up of your OE settings and folders
>> with OEBackup:
>> http://www.oehelp.com/OEBackup/Default.aspx
>> ===================================
>>
>>
>
>