Realizar un escaneo de puertos básico (nmap -F app.cosmote.gr)
Nmap scan report for app.cosmote.gr (195.167.99.23)
Host is up (0.19s latency).
Not shown: 99 filtered ports
PORT STATE SERVICE
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 6.67 seconds