Flash requires you to install a socket policy daemon[1] that typically listens on port 843 (which is why the MITM test requires that port 843 be open). When you

Flash requires you to install a socket policy daemon[1] that typically listens on port 843 (which is why the MITM test requires that port 843 be open). When you request a raw socket, Flash first connects to port 843 and requests the policy file, which will tell it whether it's allowed to use raw sockets with that server. I've set one of these up before, and I'm not really a fan. [1]: http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html http://www.adobe.com/devnet/flashplayer/articles/socket_poli...