Kali Linux Tutorials - NMAP - Network Scanning Tool - Kali Linux Tools

A Network Scanning is an important part of network, which is the process used to detect active hosts on network and also used to find few information about the hosts like OS, Apps, Active ports, Services.
These can be used for the purpose of following terms,

Network & System inventory
Compliance testing
Security auditing
Asset Management

What is NMAP ?

NMAP-Network Mapper, which is a security scanner. It is introduced by Gordon Lyon.
This Mapping tool is used to find host & Services on a network.
It was 1^st published in the year 1997, in an article of phrack magazine.
The next year 1998, Nmap 2.00 is released which includes Operating system and Finger print.
This tool comes under the Ethical hacking tutorial.

Alternatives of NMAP Network Scanning Tool :

Fing

It is used to find out which devices are connected to wifi any network.
Detect intruders.
Troubleshoot network problems.
Access network security risk.

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Advanced ip scanner

It is used to show all network devices.
Access to shared folders.
Remotely Switch off the computers.

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Advanced port scanner

It is fast and free software which is used for port scanning.
Allow to find all open ports (TCP/UDP).
Detect version of programs.

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Masscan

It is Fast Software which is used for internet port scanner.
Scan the whole internet within 6 minutes.
Transmit 10 million packets per second.

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Steps Involved in Network Scanning

Step 1:

Open Terminal

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Step 2:

Type nmap wikitechy.com and hit enter.

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Step 3:

The output of network scanning(website).

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Step 4:

Type nmap 162.144.36.172 and hit enter (wikitechy 162.144.36.172)

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Step 5:

Open ports and service are displayed.

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Step 6:

Type nmap -v 162.144.36.172 and hit enter.

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Step 7:

Detailed output is shown here.

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Step 8:

Type nmap -v 162.144.36.* (for whole subnet scanning) and hit enter.

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Step 9:

Output for whole subnet scanning.

Learn Ethical Hacking - Ethical Hacking tutorial - Output of Whole Subnet Scanning - Ethical Hacking examples - Ethical Hacking programs

Step 10:

Type nmap -A 162.144.36.172 (for information and traceroute) and hit enter.

Learn Ethical Hacking - Ethical Hacking tutorial - information-and-traceroute.png - Ethical Hacking examples - Ethical Hacking programs

Step 11:

Information and traceroute Output is shown here

Learn Ethical Hacking - Ethical Hacking tutorial - output-of-information-and-traceroute.png - Ethical Hacking examples - Ethical Hacking programs

Step 12:

Type nmap -F 162.144.36.172 (for Fast scanning) and hit enter

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Step 13:

Fast scan output is shown here

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Step 14:

Type nmap --iflist (for Host interfaces and Routers)

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Step 15:

Host interfaces and Routers Output is shown here.

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Step 16:

Type nmap -p 21 162.144.36.172 (for Particular port scanning)

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Step 17:

Output of particular port scanning.

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Step 18:

Type nmap -p 10-160 162.144.36.172 (for Particular Range port scanning)

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Step 19:

Given Ranged ports are scanned and outputs are displayed.

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Step 20:

Type nmap -sV 162.144.36.172 (for Host services version numbers) and hit enter

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Step 21:

Host services version numbers are Displayed.

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Step 22:

Type nmap -vvv-A -T4 -sS21 162.144.36.172 -oXNmap.xml (for Complete scan and store output file in xml format) and hit enter

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Step 23:

Complete scan Report is ready and the xml file is stored in Download folder.

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Step 24:

Open Download folder and see the Nmap.xml file shown here.

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Step 25:

Now convert xml to html . Type xsltproc Nmap.xml –o Nmap.html

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Step 26:

xml file is converted into html format shown here

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Step 27:

xml file is converted into html format and stored in Downloads folder shown here