Realizar un escaneo de puertos básico (nmap -F cgrendering.com)
Nmap scan report for cgrendering.com (162.144.22.118)
Host is up (0.037s latency).
rDNS record for 162.144.22.118: cs123.bluehost.com
Not shown: 86 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
26/tcp open rsftp
53/tcp open domain
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
3306/tcp open mysql
Nmap done: 1 IP address (1 host up) scanned in 1.69 seconds