full-disclosure - Re: what can be done with botnet C&C's? (fwd)

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Date: Mon, 14 Aug 2006 14:27:14 -0400
From: "Dude VanWinkle" <dudevanwinkle@...il.com>
To: "Valdis.Kletnieks@...edu" <Valdis.Kletnieks@...edu>
Cc: full-disclosure@...ts.grok.org.uk, Gadi Evron <ge@...uxbox.org>
Subject: Re: what can be done with botnet C&C's? (fwd)

On 8/14/06, Valdis.Kletnieks@...edu <Valdis.Kletnieks@...edu> wrote:
> On Sun, 13 Aug 2006 08:32:16 EDT, Dude VanWinkle said:
> > When I worked at a university, the students were always getting
> > compromised till we implemented sandboxing. People DHCP'ing into the
> > network were placed in a subnet by themselves till a scan revealed
> > that they had:
> > 1: up to date AV
> > 2: up to date patches
> > 3: a Functioning firewall
>
> OK, I'll bite - if you detect a functioning firewall, how do you scan for
> up to date patches and A/V?  Seems like you'd have to have at least a stub
> client on the machine to answer the "What patchlevel you at?" query.

We had Proventia with an allowed IP address do the scanning. The
proventia was pre-configured from when they downloaded the FW. Maybe
Comcast or some such could do the same thing, pre-configure the free
firewalls they all seem to be giving away, but I doubt it.

>
> (And this is the sort of thing that is easy to force install in a corporate
> environment where you own the machine.  It's also easy to do if you're a
> regular ISP, and you can get away with saying "If you don't like it, go to
> another ISP".  It's a can of worms when you don't own the machine, and you're
> a de facto monopoly because the student lives in the dorms - a Hobson's
> choice "install this or don't get net access" doesn't make you many friends...)

Yeah, thats why I said "This worked really well for stopping
infections, but its not something an ISP could do" ;-)

I feel you on the student tuition paid bandwidth issue, but I will let
you in on a secret: If they sign something saying "i do" you can
impose any measures you want :-)

The students were actually happy to sign on, as it helped protect
their data as well. Most of them were fed up with spyware and the like
to the point that they were desperate for help.

-JP

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