Realizar un escaneo de puertos básico (nmap -F spaceways.co.uk)
Nmap scan report for spaceways.co.uk (77.72.2.54)
Host is up (0.14s latency).
rDNS record for 77.72.2.54: biers-lon.krystal.uk
Not shown: 90 filtered tcp ports (no-response)
PORT STATE SERVICE
21/tcp open ftp
25/tcp open smtp
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 4.63 seconds