On Mon, Sep 01, 2003 at 06:32:16PM +0000, Shane Hollis wrote:
> all I orignally said was ...
> I use a redirector for my domain. It is based in the states, closer to the
> central DNS servers so changes get sent out pretty quickly.
>
> I never made any comment on how DNs works, the DNS structure or even said that
> there is a central DNS server. I never said anything about DNS lookup
> structures either. I know about ARIn, ARIPE etc. i have hacked through the
> net and caught quite aq number of spammers who hide behind faked IP's header,
> mis directions etc.
Yes, and the discussion about how DNS works came up to try and repair what
misconceptions you have about the system.
> I have however seen lookups go to sludge because of caches, proxy servers etc.
> I have had the head banging frustrations of not being able to get to a
> server, despite knowing its name after an ip change because of caches in
> ISP's and places like that. DNS does work the way you say in theory, in
> practice it doesn't always coz those implementing it do use proxy caches and
> things they shouldn't and the only way to get those changed is to have them
> refreshed( either by pushing a change or waiting till they do some ip pulls).
I dont know how many times I'd have to say "NO" till you get it.... what
you're describing is legitimate use of DNS...
> I know IP addresses are not meant to be cached together with the results but
> it does happen. I have repeatedly queried websites with changed data and
> chaged ip addresses only to watch old ip addresses and old data come up. Why?
Um, what's the point of caching DNS queries if you do not cache the IP too?
> Because there are some pretty shitty setups out there. people say you
> shouldn't set your DNs to use an ISP's DNS for lookups etc but it happens.
> The result? By the time the wrong DNs is returned from an ISP cache, the
> request sent out to get a web page or data from that ip address and then the
> ISP's web caches matches a cached Ip address on the ISPs DNs and you end up
> with completely incorrect stuff ... you are screwed. It happens and so for me
> the bigger the hoster for a domain name the more people get that IP address
> updated in one hit. Thus less crap caching to wade through.
>
> Theory is fine, the commercial reality is a night mare and corporates are
> usually the worst.
*blink*... I'm speechless Shane, I really am... It simply appears to me,
like you're not listening, and/or not even trying to understand, or let your
current knowledge be thought of as wrong...
Mike.
--
Mike Beattie <[EMAIL PROTECTED]> ZL4TXK, IRLP Node 6184
If you can stay calm, while all around you is chaos... Then you probably
haven't completely understood the seriousness of the situation.
