Realizar un escaneo de puertos básico (nmap -F tcs.com)
Nmap scan report for tcs.com (4.247.162.6)
Host is up (0.23s latency).
Not shown: 99 filtered tcp ports (no-response)
PORT STATE SERVICE
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 10.00 seconds