Joost Application Behavior: ---------------------------------- 1. First, the peer initiates the secure HTTPS to www.theveniceproject.com (89.251.2.86 ) 85 and then it sends three more https encrypted sessions to the following servers Ø tolbiac.ops.theveniceproject.com (89.251.4.175) /*backend servers*/ Ø adengine.ops.theveniceproject.com (89.251.4.175) Ø tracker.ops.theveniceproject.com (89.251.4.175) 2. Then, the peer checks the version of the software through sending a HTTP GET request to version.ops.theveniceproject.com. 3. Finally, it connects to the super node (lid.ops.theveniceproject.com) to establish connections with other peers and accessing video content. Notes: -------- 1. Joost has got official UDP and TCP ports 4166 assigned by the IANA on April 23, 2007. But older versions (Joost 0.9.2 or before) uses different ports UDP 33333 and TCP 5223. Some other older versions might be using UDP ports: 1643-1651 and 44616 2. Joost distributes licensed content. Thus all new contents are introduced through its own servers. Some of the server addresses are as follows: Ø 212.8.163.0/24 (Belgium) Ø 89.251.0.0/23 (Netherlands) Ø 213.207.101.128/25 (Netherlands) Ø 212.187.185.0.24 (United Kingdom) Ø 4.71.105.0/24 (Los Angles, California) 2. Ordinary Joost nodes receives the video content from Joost-operated servers which operates on port 33333. Thus, traffic from Joost oriented servers can be blocked but it will not block traffic from other ordinary Joost nodes. (Majority of the traffic comes from the Joost owned servers only. 3. Packets under 200 bytes are considered control packets, and data packets are 1000 bytes or more.