Realizar un escaneo de puertos básico (nmap -F nkn.in)
Nmap scan report for nkn.in (180.149.57.82)
Host is up (0.27s 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 11.33 seconds