Realizar un escaneo de puertos básico (nmap -F hxb.com.cn)
Nmap scan report for hxb.com.cn (60.247.45.145)
Host is up (0.23s 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 8.10 seconds