Book Image

Linux for Networking Professionals

By : Rob VandenBrink
1 (1)
Book Image

Linux for Networking Professionals

1 (1)
By: Rob VandenBrink

Overview of this book

As Linux continues to gain prominence, there has been a rise in network services being deployed on Linux for cost and flexibility reasons. If you are a networking professional or an infrastructure engineer involved with networks, extensive knowledge of Linux networking is a must. This book will guide you in building a strong foundation of Linux networking concepts. The book begins by covering various major distributions, how to pick the right distro, and basic Linux network configurations. You'll then move on to Linux network diagnostics, setting up a Linux firewall, and using Linux as a host for network services. You'll discover a wide range of network services, why they're important, and how to configure them in an enterprise environment. Finally, as you work with the example builds in this Linux book, you'll learn to configure various services to defend against common attacks. As you advance to the final chapters, you’ll be well on your way towards building the underpinnings for an all-Linux datacenter. By the end of this book, you'll be able to not only configure common Linux network services confidently, but also use tried-and-tested methodologies for future Linux installations.
Table of Contents (20 chapters)
1
Section 1: Linux Basics
4
Section 2: Linux as a Network Node and Troubleshooting Platform
8
Section 3: Linux Network Services

Securing your Certificate Authority infrastructure

There are several best practices that are usually recommended to protect your CA. Some of the "legacy" advice is specific to individual CAs, but with virtualization becoming common in most data centers, this brings with it additional opportunities to streamline and secure CA infrastructures.

Legacy tried-and-true advice

The traditional advice for securing an organization's certificate infrastructure takes advantage of the fact that it is only used when certificates are being issued. If you have a good administrative handle on when new certificates will be needed, you can simply power off your CA server when it's not needed.

If you need more flexibility, you can create a hierarchal certificate infrastructure. Create a root CA for your organization, whose only job is to sign certificates that are used to create a subordinate CA (or possibly multiple subordinates). These subordinates are then used to create...