ad hoc board → Re: SSDPSRV - Port 1025

Ports 1025 and above are the start of the dynamic range for almost all TCP/IP stack implementations. When programs start and ask for "next available" socket, they get them sequentially starting at 1025.

Depending on what's running on your computer and the order it starts in, this port (and those above it) could be almost anything.

Well, not quite sequentially. If the allocation would be done sequentially then it would open the door for a class of guessing attacks. The security increases with the randomness of allocation.

A second note, some systems can set the range of ports to be used for the next available port.