Realizar un escaneo de puertos básico (nmap -F certn.co)
Nmap scan report for certn.co (172.66.43.110)
Host is up (0.00083s latency).
Other addresses for certn.co (not scanned): 172.66.40.146
Not shown: 96 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
8080/tcp open http-proxy
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 1.84 seconds