full-disclosure - Comcast using IPS to protect the Internet from their home user clients?

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Message-ID: <3587D6FDF44881459313970A8DE75A81015FF651@exchange.quadrasis.com>
From: David.Cushing at hitachisoftware.com (Cushing, David)
Subject: Comcast using IPS to protect the Internet from their home user clients?

> > Anyhow, I noticed that certain vulnerability scans, for 
> example scans
> > using Nikto and similar tools, when run from a Comcast 
> address show a
> > different behavior than when they are run from a clear, uncontrolled
> > Internet connection (i.e. corporate T-3). In fact, it appears like
> > Comcast has an Inline-IDS (some call it an IPS ;) sitting 
> on its wires,
> > filtering out certain signatures and blocking subsequent 
> access for a
> > short period of time. For example, scan progresses, then hangs
> > inexplicably, then resumes, trips a sig, and hangs again. 

Adelphia (cable modem) has also been fishy lately.  Something new in the past couple of months.