Realizar un escaneo de puertos básico (nmap -F it.net)
Nmap scan report for it.net (151.1.198.2)
Host is up (0.16s latency).
Not shown: 98 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 6.32 seconds