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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

Product type Paperback

Published in Aug 2018

Publisher Packt

ISBN-13 9781789138399

Length 482 pages

Edition 2nd Edition

Tools

Linux

Concepts

Information Security

Author (1):

Tajinder Kalsi

View More author details

Table of Contents (15) Chapters

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

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Managing TCP/IP networks

As the size of a computer network grows, managing the network's information becomes an important task for the system administrator.

Getting ready

Before we start with making any changes in the TCP/IP configuration, make sure to create a backup of the Network Manager configuration file by using the following command:

Also make a backup of the /etc/network/interfaces file in the same way.

How to do it...

In this section, we will see how we can manually configure the network settings using the command line:

Before starting with the manual configuration, first, let's check our current IP address, which has been assigned to the system automatically by DHCP. We can check the details graphically by right-clicking on the networking icon on the top-right panel and then selecting Connection Information, as shown in the following screenshot:

We can see that the current IP address of our system is 192.168.1.101.

Next, we check the same information using the command line by typing in...

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Authors (1)

Kalsi

Kalsi

Tajinder Kalsi is an innovative professional with more than 9 years' progressive experience within the information security industry. He has a good amount of knowledge and experience in web application testing, vulnerability assessment, network penetration testing, and risk assessment. At present, he is working as an information security consultant. He started his career with Wipro as a technical associate, and later on he became an ISMS consultant-cum-technical evangelist. In his free time, he conducts seminars in colleges all across India on various topics, in more than 125 colleges; he has spoken to 10,000+ students. Tajinder is a certified ISO 27001:2013 Auditor. Tajinder authored Practical Linux Security Cookbook published by Packt Publishing. He has also reviewed the following books: Web Application Penetration Testing with Kali Linux and Mastering Kali Linux for Advanced Penetration Testing. He has also authored three video courses with Packt: Getting Started with Pentensing, Finding and Exploiting Hidden Vulnerabilities, and Pentesting Web Applications. He is best described as dedicated, devoted, and determined and a person who strongly believes in making his dreams come true. He defines himself as a tireless worker, who loves to laugh and make others laugh. He is also very friendly and level-headed. https://www.linkedin.com/in/tajinderkalsi/.

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