# nmap (V. 2.54BETA22) scan initiated Sat Apr  7 05:28:01 2001.
 
Warning:  OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port
Interesting ports on  (136.145.68.3):
(The 1541 ports scanned but not shown below are in state: filtered)
Port       State       Service
80/tcp     open        http                    

Too many fingerprints match this host for me to give an accurate OS guess

# Nmap run completed at Sat Apr  7 05:40:54 2001 -- 1 IP address (1 host up) scanned in 773 seconds