Realizar un escaneo de puertos básico (nmap -F pilkingtons.nl)
Nmap scan report for pilkingtons.nl (83.96.160.202)
Host is up (0.15s latency).
rDNS record for 83.96.160.202: srv4.onlineidentity.nl
Not shown: 90 filtered ports
PORT STATE SERVICE
25/tcp open smtp
80/tcp open http
110/tcp open pop3
113/tcp closed ident
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 14.12 seconds