En la siguiente salida de nmap:
$ sudo nmap -sS -sV -vv -n -Pn -T5 x.x.x.1-255 -p80,23,21 -oG - | grep 'open'
Host: x.x.x.x () Ports: 21/closed/tcp//ftp///, 23/open/tcp//telnet?///, 80/filtered/tcp//http///
Host: x.x.x.x () Ports: 21/open/t...
hecha
15.05.2013 - 09:11