nmap
nmap is a powerful tool for mapping networks (website).
Examples
nmap -p 22 -sV 10.20.21.0/24- Scan IP’s 10.20.21.0 - 10.20.21.255 on port 22
nmap is a powerful tool for mapping networks (website).
nmap -p 22 -sV 10.20.21.0/24 - Scan IP’s 10.20.21.0 - 10.20.21.255 on port 22