Realizar un escaneo de puertos básico (nmap -F sidewalkatlas.com)
Nmap scan report for sidewalkatlas.com (66.6.44.4)
Host is up (0.058s latency).
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 15.48 seconds