Macromedia released Media Server 2 today, replaced Flash Communication Server. I downloaded the free developer edition to have a look on it. Win32 version only 7M and Linux 10M.

Server default port: TCP 1935 ( registered in IANA) Admin port: TCP 1111

As I tested it, another two port 19350 and 11110 are also used by this server.

Hardware requirements: 3.2G+ CPU, 2G memory, 200M disk space, 1G Ethernet bandwidth. Protocol: rtmp/rtmps (between Flash clients and media server, rtmps actually https) Price: 100 simultaneous connections, $4,500; 5000 connections $45,000. (Update 29 Nov, one more 90-days Interim License for Flash Communication Server 1.5 developers: 2500 simultaneous connections, 25M bandwidth. )