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From "David Reid" <>
Subject Re: (new/old) idea of resolving
Date Tue, 07 Sep 1999 15:24:37 GMT
Where I sometimes work they have a problem with using dynamic IP allocation
and a desire to review what users have accessed from the internet via their
proxy.  Having the proxy lookup every IP slows the thing to a crawl so they
can't have it on, but without it they can't track who downloaded what!

Might be nice if Apache did offer the functionality, whether as a module or
as a support program using the piped logs?

Just my 2p worth.

----- Original Message -----
From: Dirk-Willem van Gulik <>
To: <>
Sent: 07 September 1999 16:08
Subject: Re: (new/old) idea of resolving

> On Tue, 7 Sep 1999, Rasmus Lerdorf wrote:
> > Why?  DNS is not a transient thing.
> Though some idiots^H^H^H^Hclever people are starting to do things like
> using quick DNS updates to for example assign very short lived reverse
> mappings to constantly changing dhcp or ppp addresses.
> Dynamic DNS Update is a mixed blessing.
> I.e. while a customer is on line, or while a machine has been dhcp-ed in,
> its reverse address it is nicely called '' or
> somthing like that. After log-off the mapping is removed.
> I've had two US customers who wanted me to implement this for them, tied
> in with security and xs control based on the short lived fqhn.
> And looking at the next windows release, that is what some security seems
> to start rely on. Going be nice to see the battle over which IT staff gets
> to run the authoritative DNS servers; as for some things you might really
> want to keep it close/on your NT domain controller.
> So there is some argument for resolving relatively quickly; though of
> course some DNS implementations their caches are hopelessly broken when
> the TTL < 15 minutes. So it cannot be that quick. Yet.
> Dw.

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