Book Image

Mastering Linux Administration

By : Alexandru Calcatinge, Julian Balog
Book Image

Mastering Linux Administration

By: Alexandru Calcatinge, Julian Balog

Overview of this book

Linux plays a significant role in modern data center management and provides great versatility in deploying and managing your workloads on-premises and in the cloud. This book covers the important topics you need to know about for your everyday Linux administration tasks. The book starts by helping you understand the Linux command line and how to work with files, packages, and filesystems. You'll then begin administering network services and hardening security, and learn about cloud computing, containers, and orchestration. Once you've learned how to work with the command line, you'll explore the essential Linux commands for managing users, processes, and daemons and discover how to secure your Linux environment using application security frameworks and firewall managers. As you advance through the chapters, you'll work with containers, hypervisors, virtual machines, Ansible, and Kubernetes. You'll also learn how to deploy Linux to the cloud using AWS and Azure. By the end of this Linux book, you'll be well-versed with Linux and have mastered everyday administrative tasks using workflows spanning from on-premises to the cloud. If you also find yourself adopting DevOps practices in the process, we'll consider our mission accomplished.
Table of Contents (20 chapters)
Section 1: Linux Basic Administration
Section 2: Advanced Linux Server Administration
Section 3: Cloud Administration

Chapter 7: Networking with Linux

Linux networking is a vast domain. The last decades have seen countless volumes and references written about Linux network administration internals. Sometimes, the mere assimilation of essential concepts could be overwhelming for both novice and advanced users. This chapter provides a relatively concise overview of Linux networking, focusing on network communication layers, sockets and ports, networking services and protocols, virtual private networks (VPNs), and network security.

We hope that the content presented in this chapter is both a comfortable introduction to basic Linux networking principles for a novice user and a good refresher for an advanced Linux administrator.

In this chapter, we cover the following topics:

  • Exploring basic networking—focusing on computer networks, networking models, protocols, network addresses, and ports. We also cover some practical aspects of configuring Linux network settings using the command...