RE: DNS Exploit Attempts??
The point in my post was asking if there was a known thing that occurred
that would have suddenly have spawned more of these kinds of queries
than in the past given that various people are seeing them.
Obviously I could research individual addresses - but my question wasn't
how to research them but rather if there was a known badness that had
suddenly started spawning more of them given that I was seeing them as
others also apparently were.
To that end Dawn's post more closely attempted to answer that than
I have by the way already created a blacklist. Again I was just
wondering if there was something new and exciting happening.
From: [email]email@example.com[/email] [mailto:firstname.lastname@example.org] On
Behalf Of Dawn Connelly
Sent: Wednesday, July 30, 2008 4:01 PM
To: Graeme Fowler
Subject: Re: DNS Exploit Attempts??
True that...but this is most likely the script that was causing the
he was seeing:
It was written by the same guy that owns the IP address space that he
seeing the . requests coming from. It should still be blacklisted.
On Wed, Jul 30, 2008 at 12:46 PM, Graeme Fowler <email@example.com>
> On Wed, 2008-07-30 at 13:08 -0400, Jeff Lightner wrote:[color=green]
> > Someone had apparently posted on a Fedora forum that seeing the high
> > level of query cache denied was a sign of people trying the exploit[/color][/color]
> > someone else here said it wasn't a symptom of the exploit.[/color]
> That's not *quite* correct (well, not even correct actually, but that
> sounds churlish).
> I said that the addresses listed in the post on the fedora-users list
> were actually directly related to research work being done by Dan
> Kaminsky and/or some people at a .edu connected to him.
> The OP of the message fired off in a panic, IMO, without doing any
> homework whatsoever.
> > However, on returning to my office I too saw a dramatic increase in[/color][/color]
> > number of these. If they aren't for the exploit does someone know[/color][/color]
> > they increased?[/color]
> If you've seen a dramatic increase in log entries, have you done any
> work at all to see where they're coming from? Pound to a penny, if you
> find they're from an educational institution you'll be able to fire[/color]
> an email to someone there (look in WHOIS for the contact details for
> starters) and they'll tell you. If they're from Nigeria, Chinese ISPs,
> Russia, or a bunch of colo/hosting places in the US or Europe (or[/color]
> common malware sources, yours will differ from mine) then they're
> probably scans from less friendly types.
> There's an interesting message on the OARCI dnsops list here:
> [note: the sender of that message is the originator of query-cache[/color]
> from Georgia Tech IP IPv4 space]
> I guess the important message here is: do some homework first. They[/color]
> or may not be malicious, but having an indication either way is good
> before you run into the woods with your shotgun.
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