Realizar un escaneo de puertos básico (nmap -F www.google.com)
Nmap scan report for www.google.com (142.250.176.4)
Host is up (0.00044s latency).
Other addresses for www.google.com (not scanned): 2607:f8b0:4007:809::2004
rDNS record for 142.250.176.4: lax17s51-in-f4.1e100.net
Not shown: 98 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 5.06 seconds