Re: DNS zone transfer?

["Marek Gutkowski" <hobbit () maxus com pl>]

----- Original Message -----
From: "Kiira Triea" <kiira-t () mail bsasinc org>
To: <snort-users () lists sourceforge net>
Sent: Thursday, July 05, 2001 6:48 PM
Subject: Re: [Snort-users] DNS zone transfer?


> Hi,
>
> > I find it in my logs regularly. The first computer (initiating the
> > connection) is a www/mail server, nothing to do with DNS, running under
> > Linux.
>
> Oh that has a *lot* to do with dns... sendmail and bind are married.
Are qmail and NT DNS Server also married? :)

> Well if the originating machine is a mail server then it would
> naturally be doing dns lookups in order to send mail out to
> plopmail.com and so connecting on port 53 (dns) of the NT running dns
> server. What makes you think this is an attempt at a zone
> transfer... that only happens between two DNS servers.

I read the RFC and now I'm wiser :) I thought that all DNS queries go as UDP
packets.
I was wrong. Snort was also wrong :)

Thanks,
Marek


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