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Configuring a Secure and Optimized Kernel

The kernel is the core of any operating system, be it Windows or Linux. Linux is technically the kernel and not the complete operating system. Being the core of any operating system, the kernel is installed first and usually requires no manual configuration. Even if there are some kernel level updates to be installed, on a Linux system, it can be installed as a regular application. However, in some situations, compiling the kernel from source with some specific changes might be needed.

However, there might be a few situations where you need to compile the kernel yourself, from the source. These situations include:

Enabling experimental features in the kernel
Enabling new hardware support
Debugging the kernel
Exploring the kernel source code

Before you can start building the Linux kernel, you must ensure that a working boot media exists...

Key benefits

Hands-on recipes to create and administer a secure Linux system

Enhance file system security and local and remote user authentication

Use various security tools and different versions of Linux for different tasks

Description

Over the last few years, system security has gained a lot of momentum and software professionals are focusing heavily on it. Linux is often treated as a highly secure operating system. However, the reality is that Linux has its share of security ?aws, and these security ?aws allow attackers to get into your system and modify or even destroy your important data. But there’s no need to panic, since there are various mechanisms by which these ?aws can be removed, and this book will help you learn about different types of Linux security to create a more secure Linux system. With a step-by-step recipe approach, the book starts by introducing you to various threats to Linux systems. Then, this book will walk you through customizing the Linux kernel and securing local files. Next, you will move on to managing user authentication both locally and remotely and mitigating network attacks. Later, you will learn about application security and kernel vulnerabilities. You will also learn about patching Bash vulnerability, packet filtering, handling incidents, and monitoring system logs. Finally, you will learn about auditing using system services and performing vulnerability scanning on Linux. By the end of this book, you will be able to secure your Linux systems and create a robust environment.

What you will learn

Learn about vulnerabilities and exploits in relation to Linux systems

Configure and build a secure kernel and test it

Learn about file permissions and how to securely modify files

Authenticate users remotely and securely copy files on remote systems

Review different network security methods and tools

Perform vulnerability scanning on Linux machines using tools

Learn about malware scanning and read through logs

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Instant access to your digital eBook copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

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Frequently bought together

Kali Linux Web Penetration Testing Cookbook

€41.99

€36.99

€52.99

Total € 131.97

DealzLab.de Feb 03, 2019

This book is great! You will find a sorted and well-structured list of measurements to protect your server against malicious attacks from outside. It guides you step by step to create a secure system. With this book, you will have the know-how of many different server security measurements. It describes each aspect in a quick and easy to understand manner.Some small critics I need to add also:The very important topic "Server Backup" should be described more into detail so that one can make remote hard drive backups. Because that's what most people need to do. Few tools are also not mentioned there which I considder as to be very important for a server administrator like WinSCP and the command screen as an example. Also, the very important aspect of monitoring file changes on the server could be described a bit more into detail.Overall it is very good and easy to understand the book. Some very important aspects could be described more into detail but that's only my point of view.

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Lorraine Oct 31, 2019

This book is quick because the Author runs three a lot of quick examples. Which then gives you ideas for more complicated uses of the same features/services the book walks the reader through.

Koen Vervloesem Aug 25, 2019

If you want to know how to install various Linux security programs, this book is definitely for you. The author is even kind enough to include lots of screenshots of apt-get output and for some programs he even provides alternate installation methods like compiling the software yourself if you're for some reason unable to install it with apt-get. As a bonus, you even get a lot of installation instructions for non-security related programs for free.For everyone who wants to learn more about *using* these programs, don't buy this book. This is the first time ever I made the effort to write an Amazon review, just because I have too many issues with the book:- As I already wrote in the beginning, half of the book's pages are wasted with installation instructions, complete with half a page of output for every apt-get install. The author also spends a lot of time about basic Linux commands that have nothing to do with security.- Most of the cookbook tips of the more complex programs end with a variation of "Now that we have installed and configured X, we can do Y", and Y is where the fun actually begins, Y is what I wanted to learn to begin with, Y is the reason I bought this book.- The content is very shallow. For instance, apparently the author thinks securing an email server is done by disabling the vrfy command. Relay restrictions? Authentication and encryption? SPF, DKIM, DMARC? You won't find anything about these topics in this book.- There's no focus. Many times the author shows an obscure option or program behaviour that just isn't relevant, and then forgets to talk about the really interesting stuff (such as the email example in my previous point). Or he shows pages and pages of screenshots of the GNOME interface of Kali Linux and then just goes on to the next topic.- There are big holes in the topics: nothing about DNS security and nothing about OpenVPN, for instance.- Some things are just wrong. For instance, the author talks about an iptables 'table' when he means a 'chain'. He doesn't even explain the concepts of tables and chains.- There are a lot of bad security practices in this book, such as logging in as root, running a clearly EOL Ubuntu server in the screenshots with hundreds of security updates waiting to be installed, telling readers to disable SELinux when a program doesn't work to see whether SELinux is the problem (duh! I want to know why it doesn't work then, but I won't learn in this book which SELinux rules are the culprit), telling readers to "just ignore the warning" when you're connecting to a web server with a self-signed certificate in your browser, and so on.- The book could also use some better copy-editing.I expected better from a book called "Practical Linux Security Cookbook". Shame on you, Packt, for publishing this.I will send this book back for a refund, and that's another first.

Practical Linux Security Cookbook: Secure your Linux environment from modern-day attacks with practical recipes , Second Edition

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Practical Linux Security Cookbook

Configuring a Secure and Optimized Kernel

Creating USB boot media

Getting ready

Retrieving the kernel source

Getting ready

How to do it...

Configuring and building kernel

Getting ready

Installing and booting from a kernel

Getting ready

How to do it...

Kernel testing and debugging

Configuring console for debugging using netconsole

Debugging kernel boot

How to do it...

Kernel errors

Causes of kernel errors

Checking kernel parameters using Lynis

Getting ready

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