Realizar un escaneo de puertos básico (nmap -F tele2.nl)
Nmap scan report for tele2.nl (20.56.240.229)
Host is up (0.14s latency).
Not shown: 98 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 6.31 seconds