Briefing
nmap maps open ports and, with service detection, reads the banner each service returns. Banners are a classic information leak.
nmap -sV 127.0.0.1Objective Run an nmap scan against 127.0.0.1 and read the service banner.
Stuck?
Take it one step at a time. Ask for a hint here, or type help in the terminal to
see the commands this challenge is about. Typing hint works there too.
That is every hint. If you are still stuck, run help in the terminal.