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How to use nmap

Jun 13, 2019 pm 04:45 PM
nmap

Nmap (Network Mapper) is a security scanner originally written by Gordon Lyon to discover hosts and services on a computer network to create a "map" of the network. To achieve its goals, Nmap sends specific packets to the target host and then analyzes the response. NMAP is a powerful network tool used to enumerate and test networks.

How to use nmap

Usage:

Pure scanning of Nmap (Recommended learning: PHP video tutorial )

By default, nmap will issue an arp ping scan (-sP if the switch is committed), and it will also scan open ports for specific targets in the range 1-10000

The syntax of the following command is as follows:

nmap 

Where: target IP address = the specified IP of your target machine

(nmap 10.1.1.254)

NMAP normal scan increases the output verbosity (very detailed )

The following command has the following syntax:

nmap -vv 10.1.1.254

where: -vv = switch to activate very detailed settings required for logging

your scan entries

(nmap -vv10.1.1.254)

Nmap’s Custom Port Scan

Nmap’s scan ranges from 1-10000 ports by default. To be more specific about which ports to scan, we will Use the -p switch to specify our port scan range, the advantage is that it will scan a smaller number of ports faster than the predefined default

Syntax: ​

nmap -p(范围)

Where: -P is the port switch (range) is the port number from 1-65535 is your specific target IP address

(Scan from port range 1-50)

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