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

Certificate Transparency

Reviewing the opening paragraphs of the chapter, recall that one of the major jobs of a CA is trust. Whether it is a public or a private CA, you have to trust a CA to verify that whoever is requesting a certificate is who they say they are. If this check fails, then anyone who wants to represent yourbank.com could request that certificate and pretend to be your bank! That would be disastrous in today's web-centric economy.

When this trust does fail, the various CAs, browser teams (Mozilla, Chrome, and Microsoft especially), and OS vendors (primarily Linux and Microsoft) will simply delist the offending CA from the various OS and browser-certificate stores. This essentially moves all of the certificates issued by that CA to an untrusted category, forcing all of those services to acquire certificates from elsewhere. This has happened a few times in the recent past.

DigiNotar was delisted after it was compromised, and the attackers got control of some...