Flash Player with Sockets

We have a simple Flash Player that connect with a IP Camera through a socket (XML Socket) listening on 80 port. We need to find out a way to put it to work through firewalls, cause the news specs for Flash Sockets 9 (or higher) must share policies files using XML Socket that follows a sequence like this: 1- Try to connect on 843 port 2- Try to connect on the same port as requested (in our case 80) 3- Try another port according with LoadPolicyFile We can't use 1 and 3 cases, because our player is executed into corporate networks (~firewall), so the best way would be create a server script listening on port 80 to provide XML policies file. Of course this is not possible cause HTTP Server is already listening in this port! We look for a solution to put it to work over 80 port - cause this is the only one that is always allowed in firewalls! The flash player is ready and working fine... So, it's necessary to find out a solution (and if necessary, develop that!) to allow flash sockets behind firewalls using port 80. It's mandatory keep the player compiled in flash 10.