Realizar un escaneo de puertos básico (nmap -F cnord.ru)
Nmap scan report for cnord.ru (178.154.200.239)
Host is up (0.19s 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 7.33 seconds