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

Chapter 7 – DHCP Services on Linux

  1. First, this may be a problem only for the person who called the Helpdesk. Make sure that this is a branch-wide issue. Make sure that the person who called is plugged into the network (or is associated properly if they are wireless). Make sure that they are not working from home; if they're not even in the office, then this isn't likely a problem with your server.

    With the Do we have a problem questions done, see if you can reach anything in the remote office. If the WAN link, VPN link, router, or switches for the office are not all working, then DHCP won't be working either. Make sure that you can ping or otherwise test each of these devices before digging too deep into the DHCP side of things.

    Next, start by ensuring that the DHCP server is actually working. Check whether the service is running – note that the following systemctl command provides you with some of the recent DHCP packet information:

    $ systemctl status...