Realizar un escaneo de puertos básico (nmap -F 36kr.com)
Nmap scan report for 36kr.com (203.107.84.131)
Host is up (0.16s 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 6.27 seconds