I just got this by way of the PlanetLab mailing list... Definitely thought it would be of interest! - Mike ---------------------------- Original Message ---------------------------- Subject: [Planetlab-users] Announcing: TCP NAT Traversal/Hole-Punching Library From: "Saikat Guha" Date: Wed, September 28, 2005 3:46 am -------------------------------------------------------------------------- Hi all, (apologies if you get multiple copies of this) I am pleased to announce the availability of our open-source TCP NAT Traversal/Hole-Punching library based on our research published in [1]. [1] "Characterization and Measurement of TCP Traversal through NATs and Firewalls", S. Guha and P. Francis. IMC 2005. http://nutss.net/pub/imc05-tcpnat.pdf The key result of the paper is: TCP NAT traversal can work 85%-90% of the time today (without any special assumptions about NATs), and 100% of the time between pairs of certain popular, well-behaved NATs. See [1] for more details. An open-source Java library for TCP NAT Traversal is now available: webpage: http://nutss.net/stunt.php faq: http://nutss.net/jstunt-faq.php library and example: http://nutss.net/jstunt-examples.php The above library has been tested for pair-wise connectivity across 11 brands of NATs from Windows and Linux hosts. NATs tested were Linksys, DLink, Netgear, Belkin, 3Com, Netopia, Allied Telesyn, SMC, Trendnet, USR, Buffalo Tech. Out of the 121 possible pair-wise combinations, 113 connections are successful. The only ones that failed are when both the endpoints are behind the _same_ NAT device that does not support TCP hairpin-behavior yet (see [1]). The java library is released under LGPL; contact me if this does not meet your needs. Feel free to extend it/port it etc. Q: I am a P2P developer/researcher. How does this help me? A: The library adds TCP NAT traversal out-of-the-box. This increases the connectivity in your P2P network since two users behind their NATs can now exchange data without having to go through an intermediary node. You can: - Use this library as is (for development of P2P software, research, small deployments, etc in java) - Study it to provide TCP NAT Traversal in your existing P2P applications in your language of choice. - etc. If you have any questions, comments, suggestions, or problems, do not hesitate to contact me. Cheers, -- Saikat _______________________________________________ Users mailing list: Users@lists.planet-lab.org https://lists.planet-lab.org/mailman/listinfo/users ----- End forwarded message ----- _______________________________________________ Gnucla-devel mailing list Gnucla-devel@starsky.ee.ucla.edu http://starsky.ee.ucla.edu/cgi-bin/mailman/listinfo/gnucla-devel _______________________________________________ p2p-hackers mailing list p2p-hackers@zgp.org http://zgp.org/mailman/listinfo/p2p-hackers _______________________________________________ Here is a web page listing P2P Conferences: http://www.neurogrid.net/twiki/bin/view/Main/PeerToPeerConferences ----- End forwarded message ----- -- Eugen* Leitl <a href="http://leitl.org">leitl</a> ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.leitl.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE [demime 1.01d removed an attachment of type application/pgp-signature which had a name of signature.asc]