Re: Dns Cache -- Thanks for any help

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Date: Tue, 28 Dec 2004 12:05:11 -0600

"Joe Hardin" <spepa@c-gate.net> wrote in message
news:#zw76SQ7EHA.1264@TK2MSFTNGP12.phx.gbl...
> Herb,
>
> Thanks for your comments. The intranet dns servers are caching, but I
only
> see via ipconfig /displaydns cache entries for the other intranet servers
> that they are replicating with.

IPConfig /displayDNS is strictly a CLIENT DNS
function. It has nothing to do with the DNS server
(as a server).

In fact, it should generally be disabled on a DNS
server by stopping the "DNS Client" service.

> When I look in the cache on my XP
> workstation, I see locations of sites I have browsed to. What I now
wonder
> about, is why are the locations I have browsed to, cached on the intranet
> server dns for other intranet clients to use?

Yes, because the XP clients are DNS clients and
caching their own resolutions -- the DNS server
is probably not browsing the Internet (as a client
of HTTP, NOR of DNS for very much.)

> I also understand what you are saying about allowing the firewall to
> forward, but our firewall manufacturer says that can be problematic at
times
> so we disabled that function not long after the firewall installation. By
> doing so, browsing speed increased.

Problematic at times?

Are they saying their firewall DNS server is buggy?

Replace it with one that works if this is an issue
for you.

> Any additional comments or help is appreciated. I would really like for
> more items to be cached on the servers so they would be available for
other
> clients.

ISA or another Proxy server will offer more performance
benefits for most people. (You can also run a caching DNS
server on that machine which is what I do.)

-- 
Herb Martin
>
> Thanks,
>
> Joe
> spepa@c-gate.net
>
>
>
> "Herb Martin" <news@LearnQuick.com> wrote in message
> news:eCDe$JQ7EHA.2572@tk2msftngp13.phx.gbl...
> > "Joe Hardin" <spepa@c-gate.net> wrote in message
> > news:#m9XCrP7EHA.2788@TK2MSFTNGP15.phx.gbl...
> >> The setup:
> >>
> >> 1.    Win2K dns servers with forwarding enabled.
> >> 2.    Win2K Pro and XP Pro workstations.
> >> 3.    T-1 internet connection.
> >>
> >> When a workstation cannot resolve a browser request and the request is
> > sent
> >> to the local dns server and it cannot locally resolve but must forward
> >> the
> >> request to the internet, does the local Win 2K server cache the results
> > from
> >> the remote internet dns server that was used as a forwarder?
> >
> > Yes.  (if it caches at all which is the expect default.)
> >
> >> Without editing the registry, is there a "more safe" method of
increasing
> >> the size of the Win 2K server's dns cache?
> >
> > I will bet it is already bigger than you need.
> > What makes you think it is full?  Generally it is
> > TIME sensitive rather than size restricted.
> >
> > Win2000+ stations also cache locally.
> >
> >> I'm considering any and everyway to speed up the internet browsing as
you
> >> can tell.
> >
> > ISA is your friend.
> >
> > To where do your internal DNS server forward?
> >
> > You might help slightly if you forward to your gateway/
> > firewall and let it forward to the ISP DNS rather than
> > direct.
> >
> >
> > -- 
> > Herb Martin
> >
> >
> >>
> >> Thanks for everyone's comments,
> >>
> >> Joe Hardin
> >> Taylorsville, MS
> >>
> >> spepa@c-gate.net
> >>
> >>
> >>
> >
> >
>
>

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