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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

2. Configuring a Secure and Optimized Kernel FREE CHAPTER

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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Remote server/host access using SSH

Secure Shell (SSH) is a protocol that is used to log onto remote systems securely and is the most commonly used method for accessing remote Linux systems.

Getting ready

To see how to use SSH, you need two Ubuntu systems. One will be used as the server and the other as the client.

How to do it...

To use SSH, you can use freely available software called OpenSSH. Once the software is installed, it can be used by the ssh command. We will look at how to use this tool in detail:

If OpenSSH server is not already installed, it can be installed using the following command:

sudo apt-get install openssh-server

Next, we need to install the client version of the software:

sudo apt-get install openssh-client

For the latest versions, the SSH service starts running as soon as the software is installed. If it is not running by default, we can start the service by using the command:

sudo service ssh start

Now, to log in to the server from any other system using SSH, you can use the...

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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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