[VOIPSEC] FYI - SIP and NAT traversal - Blue Box Special Edition #22 now available

[Dan York]

VOIPSEC members,

Have you ever wanted to understand what the issue is with SIP and NAT  
and what are the various solutions?  Yesterday I uploaded Blue Box  
Special Edition #22 which get into this precise subject at:

http://www.blueboxpodcast.com/2007/12/blue-box-se022.html

In the 25-minute interview, I saw down with Dr. Jonathan Rosenberg,  
Cisco fellow and author or many RFCs and Internet-Drafts related to  
SIP, and discussed the challenges with SIP and NAT traversal, how  
ALGs and SBCs attempt to solve the issue and how the IETF has  
attempted to solve the issue with STUN, TURN and now ICE.  I think  
you'll find it a very useful and educational session.

The interview is also a great companion to Blue Box Special Edition  
#20 that came out in September which was an interview with Cullen  
Jennings about SIP security:

http://www.blueboxpodcast.com/2007/09/blue-box-se020-.html

The two podcasts together should give you a good understanding of the  
current state of SIP security.

Enjoy,
Dan

-- 
Dan York, CISSP, Director of Emerging Communication Technology
Office of the CTO    Voxeo Corporation     dyork at voxeo.com
Phone: +1-407-455-5859  Skype: danyork  http://www.voxeo.com
Blogs: http://blogs.voxeo.com  http://www.disruptivetelephony.com

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