Realizar un escaneo de puertos básico (nmap -F nichiha.com)
Nmap scan report for nichiha.com (52.119.45.50)
Host is up (0.053s latency).
rDNS record for 52.119.45.50: s28.fused.com
Not shown: 87 filtered tcp ports (no-response), 1 filtered tcp ports (port-unreach)
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
26/tcp open rsftp
80/tcp open http
110/tcp open pop3
143/tcp open imap
443/tcp open https
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
Nmap done: 1 IP address (1 host up) scanned in 4.33 seconds