Insufficient responses for TCP sequencing (1), OS detection may be less accurate
Interesting ports on salud.unca.edu.ar (170.210.136.6):
(The 1524 ports scanned but not shown below are in state: closed)
Port       State       Service
7/tcp      open        echo                    
9/tcp      open        discard                 
13/tcp     open        daytime                 
17/tcp     open        qotd                    
19/tcp     open        chargen                 
21/tcp     open        ftp                     
25/tcp     open        smtp                    
27/tcp     open        nsw-fe                  
42/tcp     open        nameserver              
79/tcp     open        finger                  
80/tcp     open        http                    
106/tcp    open        pop3pw                  
107/tcp    open        rtelnet                 
110/tcp    open        pop-3                   
135/tcp    open        loc-srv                 
139/tcp    open        netbios-ssn             
180/tcp    open        ris                     
443/tcp    open        https                   

Remote operating system guess: Windows NT4 / Win95 / Win98

# Nmap run completed at Tue Jul 31 21:35:02 2001 -- 1 IP address (1 host up) scanned in 275 seconds