# Identify target addresses on network
nmap -sn 10.11.1.1/24
# Scan default 1000 ports
nmap 10.11.1.22
# Scan for service version, default scripts and OS version
nmap -sV -sC -O 10.11.1.22
# Scan all 65535 ports
nmap -p- 10.11.1.22
# Scan for vulnerabilities on specific ports
nmap --script vuln 10.11.1.22 -p 21,80
# Scan port 25 and check if open
nc -nv 10.11.1.120 25
HELP
# Scan 110 for POP3 credentials and if open
nc -nv 10.11.1.120 110
USER bob
PASS bob
QUIT
# Scan IMAP port
nc -nv 10.11.1.120 143