Realizar un escaneo de puertos básico (nmap -F gswyh.cn)
Nmap scan report for gswyh.cn (38.165.90.82)
Host is up (0.010s latency).
Not shown: 99 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
Nmap done: 1 IP address (1 host up) scanned in 2.59 seconds