Realizar un escaneo de puertos básico (nmap -F 137.184.31.41)
Nmap scan report for 137.184.31.41
Host is up (0.069s latency).
Not shown: 88 filtered ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
143/tcp open imap
443/tcp open https
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
Nmap done: 1 IP address (1 host up) scanned in 2.30 seconds