The Uncomplicated Firewall is already installed on your Ubuntu machine. It still uses the iptables service, but it offers a vastly simplified set of commands. Perform just one simple command to enable it, and you have a good, preconfigured firewall. There's a graphical frontend for use on desktop machines, but since we're learning about server security, we'll just cover the command-line utility here.
Mastering Linux Security and Hardening
By :
Mastering Linux Security and Hardening
By:
Overview of this book
This book has extensive coverage of techniques that will help prevent attackers from breaching your system, by building a much more secure Linux environment. You will learn various security techniques such as SSH hardening, network service detection, setting up firewalls, encrypting file systems, protecting user accounts, authentication processes, and so on. Moving forward, you will also develop hands-on skills with advanced Linux permissions, access control, special modes, and more. Lastly, this book will also cover best practices and troubleshooting techniques to get your work done efficiently.
By the end of this book, you will be confident in delivering a system that will be much harder to compromise.
Table of Contents (12 chapters)
Preface
Free Chapter
Running Linux in a Virtual Environment
Securing User Accounts
Securing Your Server with a Firewall
Encrypting and SSH Hardening
Mastering Discretionary Access Control
Access Control Lists and Shared Directory Management
Implementing Mandatory Access Control with SELinux and AppArmor
Scanning, Auditing, and Hardening
Vulnerability Scanning and Intrusion Detection
Security Tips and Tricks for the Busy Bee
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