Realizar un escaneo de puertos básico (nmap -F adinstruments.com)
Nmap scan report for adinstruments.com (3.223.91.80)
Host is up (0.068s latency).
Other addresses for adinstruments.com (not scanned): 52.7.158.131
rDNS record for 3.223.91.80: ec2-3-223-91-80.compute-1.amazonaws.com
Not shown: 98 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 2.67 seconds