Snort mailing list archives

Re: Detecting Skype traffic (reliably)


From: "Humes, David G." <David.Humes () jhuapl edu>
Date: Wed, 25 Oct 2006 11:57:45 -0400

TippingPoint can detect Skype program downloads, Skype update requests,
and first time logins after fresh Skype installs.  AFAIK, they do not
have a way to detect arbitrary Skype traffic.

-----Original Message-----
From: snort-users-bounces () lists sourceforge net 
[mailto:snort-users-bounces () lists sourceforge net] On Behalf 
Of Paul Halliday
Sent: Tuesday, October 24, 2006 8:36 PM
To: Andrew Hay
Cc: Snort-users () lists sourceforge net
Subject: Re: [Snort-users] Detecting Skype traffic (reliably)


AFAIK there is _always_ the initial agent -> server 
communication before any calls. This is trivial to detect.

On 10/24/06, Andrew Hay <andrewsmhay () gmail com> wrote:
Has anyone, in practice...not in theory, been able to create and 
validate a snort signature that is able to classify Skype traffic? 
I've been researching for days and am having a hard time.  
I know that 
TippingPoint has a way of classifying (and blocking) Skype 
traffic but 
from what I hear they don't appear to be sharing the 
'secret sauce'. 
Any input would be greatly appreciated.

--
Andrew Hay [NSA/CCSE Plus/CCNA/Security+/RHCE/GCIA/SSP-MPA/SSP-CNSA]
blog: https://www.andrewhay.ca
email: andrewsmhay || at || gmail.com


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Using Tomcat but need to do more? Need to support web services,
security? Get stuff done quickly with pre-integrated technology to make
your job easier Download IBM WebSphere Application Server v.1.0.1 based
on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
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