Network Discovery

# nmap    
# nmap -A          : Scan Top 1000 ports et get services versions
# nmap -sV -sC -p-  : Scan all 65535 TCP ports
# nmap -sU          : Scan UDP ports
    -sV : Attempts to determine the version of the service running on port
    -sC : Scan with default NSE scripts. Considered useful for discovery and safe
    -A  : Enables OS detection, version detection, script scanning, and traceroute
    -p- : Port scan all ports
    -sU : UDP ports (very slow)
    -oN nmap.log : output file

The three scripts can be launch in parallel in three different xterms.