Performing a basic port scan (nmap -F nfe.svrs.rs.gov.br)
Nmap scan report for nfe.svrs.rs.gov.br (200.233.14.141)
Host is up (0.18s latency).
Not shown: 99 filtered ports
PORT STATE SERVICE
443/tcp open https
Nmap done: 1 IP address (1 host up) scanned in 8.51 seconds