On Tue, 2009-10-06 at 17:03 +0100, Gordon Henderson wrote: > On Tue, 6 Oct 2009, Faraz Khan wrote: > > > In pakistan they have protocol scanners mounted on all the 4 fibers that > > enter and leave pakistan. They can detect VOIP usage by upload/download > > patterns / etc. They have invaded and arrested many illegal 'calling > > card' operators in the past. Im sure the same is true for china. However > > I dont know how they can detect VOIP traffic in a encrypted tunnel. > > 50 small (160 byte) packets per second each way per call is still the same > in an encrypted tunnel... no need to see (DPI) the data, just count the > packet rate. >
If all they do is counting packets, i would suggest (besides the normal voip traffic) doing a constant reload of the web-page of al-jazeerah, Or constantly, at a low transfer-rate, reloading the Koran forever. _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2009 - October 13 - 15 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
