Interesting ports on dsfmcad1.od.nih.gov (156.40.172.109):
(The 1526 ports scanned but not shown below are in state: closed)
Port       State       Service
19/tcp     filtered    chargen                 
21/tcp     open        ftp                     
25/tcp     open        smtp                    
69/tcp     filtered    tftp                    
80/tcp     open        http                    
111/tcp    filtered    sunrpc                  
135/tcp    open        loc-srv                 
139/tcp    open        netbios-ssn             
161/tcp    filtered    snmp                    
162/tcp    filtered    snmptrap                
443/tcp    open        https                   
515/tcp    filtered    printer                 
1032/tcp   open        iad3                    
6699/tcp   filtered    napster                 
8888/tcp   filtered    sun-answerbook          
32771/tcp  filtered    sometimes-rpc5          

Remote operating system guess: Windows NT4 / Win95 / Win98

# Nmap run completed at Thu Jun  7 04:47:53 2001 -- 1 IP address (1 host up) scanned in 14 seconds