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Network Security Security-Basics
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using Skype, hosted voip, etc. in SMB

Subject: using Skype, hosted voip, etc. in SMB
Date: Fri, 21 Jul 2006 11:33:33 -0500
I work for a SMB automotive manufacturer based in the US.  In the process of 
planning for a new project for which we
will have a number of people traveling international, there was a proposal to 
use Skype to save on long distance phone
charges when they travel to Europe and Mexico.  Skype kind of concerns me as an 
unknown quantity.  They do have some
security information, including one security evaluation report, listed on their 
site <http://www.skype.com/security/>.
They claim to use 256-bit AES "in order to actively encrypt the data in each 
Skype call or instant message."  Has this
claim been substantiated by any neutral third-parties?

I see that a Chinese company claims to have "cracked" the Skype protocol 
<http://www.voipwiki.com/blog/?p=16>
<http://www.voipwiki.com/blog/?p=31>.  Does anyone see any security risks 
coming out of this?

What about hosted VOIP services like NewCross Technologies 
<http://www.newxt.com/> and Pandora Networks
<http://www.pandoranetworks.com/> that use open protocols (ie. SIP)?  Has 
anyone used any of these?  What security
features should I look for in choosing one?

-------------------
Andrew Stewart
astewart@notre1.com
(205) 585-2980 - cell

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