List of useful nmap examples
Ping Scan (using cidr)
nmap -sn -n 10.100.13.0/24
Exhaustive Scan:
nmap -sV -n -v -Pn -p- -A --reason -oN nmap.txt $IP
SSL Strength Check:
nmap -Pn --script ssl-enum-ciphers -p 443 $HOSTNAME
SSH Cipher Check:
nmap --script=ssh2-enum-algos.nse -n -PS22 -p22 $IP
Show Allowed HTTP Methods:
nmap -p 80 --script http-methods $IP
Nmap against multiple hosts:
nmap -n -PS22 -p22 -iL hosts
Don't forget the nifty vulners script:
--script vulners