Warning:  OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port
Insufficient responses for TCP sequencing (2), OS detection may be less accurate
Insufficient responses for TCP sequencing (2), OS detection may be less accurate
Insufficient responses for TCP sequencing (2), OS detection may be less accurate
Interesting ports on conference.ca5.uscourts.gov (207.41.16.186):
(The 1539 ports scanned but not shown below are in state: filtered)
Port       State       Service
21/tcp     open        ftp                     
80/tcp     open        http                    
443/tcp    open        https                   

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

# Nmap run completed at Mon Aug 13 04:13:50 2001 -- 1 IP address (1 host up) scanned in 648 seconds