I was interested to know how many ports can be opened on Fedora Linux FC4. I did an experiment. I wrote a server program that accepts TCP connections and a client program that keeps connecting to the Server port. Guess the results? The server program can have about 1020 port maximum only. Is that not low for a server expected to be used by millions. Windows XP professional with SP2 can open about 3000 ports maximum. Regards...........vi.