Common Nmap scan parameters

Network mapper (NMAP) is a powerful scanner that is often used in network security penetration testing. Below we will introduce several scanning parameters, mainly from the Internet:

1) obtain the system type and open port of the remote host

nmap -sS -P0 -sV -O

<Target> can be a single IP address, host name, domain name, or subnet.

-Ss tcp syn scan (also known as semi-open or stealth scan)

-P0 allows you to Disable ICMP pings.

-SV: Enable System Version Detection

-O attempts to identify remote operating systems

Other options:

-A: Enable the operating system fingerprint and version detection at the same time.

-V: Output Scan details.

nmap -sS -P0 -A -v < target >

2) list hosts with specified ports Enabled

nmap -sT -p 80 -oG – 10.0.1.* | grep open

3) Search for all online hosts on the network

nmap -sP 10.0.1.*

4) ping the IP address within the specified range

nmap -sP 10.0.1.100-254

5) Search for unused IP addresses on a subnetwork

nmap -T4 -sP 10.0.1.0/24 && egrep “00:00:00:00:00:00″ /proc/net/arp

6) scan the Conficker worm on the LAN.

nmap -PN -T4 -p139,445 -n -v –script=smb-check-vulns –script-args safe=1 10.0.1.1-254

7) scan malicious access points on the network

nmap -A -p1-85,113,443,8080-8100 -T4 –min-hostgroup 50 –max-rtt-timeout 2000 –initial-rtt-timeout 300 –max-retries 3 –host-timeout 20m –max-scan-delay 1000 -oA wapscan 10.0.1.0/24

8) scan host ports using bait scanning methods

sudo nmap -sS 10.0.1.10 -D 10.0.1.11

9) How many Linux and win devices are displayed on the network?

nmap -F -O 10.0.1.1-254|grep "Running:" >/tmp/os; echo "`cat /tmp/os |grep linux |wc -l` Linux dervice(s)"; echo "`cat /tmp/os |grep Windows |wc -l` Windows Device"

This article is from the "DBQ blog" and will not be reproduced!

Common Nmap scan parameters