nmap

Nmap is a free and open-source utility used for network exploration and security auditing

Basic

Think ip = 192.168.0.101 Basic command for nmap:

nmap 192.168.0.101

Scan top 1000 ports

nmap -vvv 192.168.0.101

print only open ports

nmap -T5 -A -Pn -sC -p21,22,80,445 192.168.0.101

-T5 = Fastest scan -A = Enable OS detection, version detection, script scanning, and traceroute -p = Port number what should scan -Pn = Scan ports without ping -sC = default script

Some useful flags

1. -iL = Input from list of hosts/networks
2. -sS = TCP SYN
3. -p = Port number what should scan
4. -sV = Open port service/version info
5. -sC = equivalent to —script=default
6. -O = Enable OS detection
7. -oN = Output file in .txt format
8. -v = Increase verbosity level (use -vv or more for greater effect)
9. -A = Enable OS detection, version detection, script scanning, and trace-route