I have only really seen it in public hotspots. Strangely enough, one of our teams member's firewall does not let UDP in or out. I am not really sure why, it is just a Netgear CG814M and I do not think he added any special rules.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Barrett Sent: Friday, December 15, 2006 4:57 PM To: 'theory and practice of decentralized computer networks' Subject: RE: [p2p-hackers] Re: A new approach to NAT/Firewall traversal > -----Original Message----- > From: Jeff Capone > > Some firewall do not let UDP in or out. The advantage with TCP is > even if you have a very restricted firewall on one side, the outbound > connection will look like a normal tcp open to it and it will allow > the connection to form. Have you seen this much in practice? While I'm sure this happens to some degree -- especially in locked-down corporate environments -- those same environments also probably block outbound TCP. Have you seen many environments that allow outbound, unproxied TCP connections while blocking outbound UDP? In my experience, straight up UDP blockage is exceedingly rare -- less than 1% of connections surveyed, though my demographic tends toward home users. -david _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
