Realizar un escaneo de puertos básico (nmap -F clsi.org)
Nmap scan report for clsi.org (13.90.145.24)
Host is up (0.060s 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 4.47 seconds