Realizar un escaneo de puertos básico (nmap -F dijnet.hu)
Nmap scan report for dijnet.hu (91.198.198.5)
Host is up (0.18s 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 8.52 seconds