Performing a basic port scan (nmap -F summitimpact.org)
Nmap scan report for summitimpact.org (54.88.5.33)
Host is up (0.068s latency).
rDNS record for 54.88.5.33: ec2-54-88-5-33.compute-1.amazonaws.com
Not shown: 97 filtered tcp ports (no-response)
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 2.52 seconds