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Practical Linux Security Cookbook

You're reading from   Practical Linux Security Cookbook Secure your Linux environment from modern-day attacks with practical recipes

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789138399
Length 482 pages
Edition 2nd Edition
Tools
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Author (1):
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Tajinder Kalsi Tajinder Kalsi
Author Profile Icon Tajinder Kalsi
Tajinder Kalsi
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Toc

Table of Contents (15) Chapters Close

Preface 1. Linux Security Problem FREE CHAPTER 2. Configuring a Secure and Optimized Kernel 3. Local Filesystem Security 4. Local Authentication in Linux 5. Remote Authentication 6. Network Security 7. Security Tools 8. Linux Security Distros 9. Bash Vulnerability Patching 10. Security Monitoring and Logging 11. Understanding Linux Service Security 12. Scanning and Auditing Linux 13. Vulnerability Scanning and Intrusion Detection 14. Other Books You May Enjoy

Monitoring the network using Nmap


For any network, big or small, network monitoring and security is a very essential task. Regular monitoring of the network is important to protect the systems from attacks and also keeps viruses and malware out of the network.

Nmap, short forNetwork Mapper, is a free and open source tool for network monitoring and is the most versatile tool for system/network administrators. Nmap can be used to perform security scans, explore the network, find open ports on the remote system, and perform network audits.

 

Getting ready

To show you the workings of nmap, we need a minimum of two systems forming a small network. On one system, we will install the nmap package, while the other system will be used as a host to scan.

  1. To install nmap, if it is not already installed, run the following command:
  1. If we want to check the version of Nmap, we can use the following command:

How to do it...

In this section, we will see how we can use Nmap for performing different types of scans...

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