Well, a quick google - http://www.google.com/search?hl=en&q=tcp+ports
- gave me: http://www.networkice.com/advice/Exploits/Ports/ and http://www.iana.org/assignments/port-numbers This would presumably be the authoritative source; the answer to your questions is at the top of this (very long) page. -steve At 04:20 PM 2/4/02 , Liam MacKenzie wrote: >Just a quick question... >What is the highest port possible? > >I want to make a PHP port scanner, but need to know the portrange. > >Thanks +------------------------------------------------------------------------+ | Steve Edberg [EMAIL PROTECTED] | | Database/Programming/SysAdmin (530)754-9127 | | University of California, Davis http://pgfsun.ucdavis.edu/ | +---------------------- Gort, Klaatu barada nikto! ----------------------+