Book Image

Mastering Linux Network Administration

By : Jay LaCroix
Book Image

Mastering Linux Network Administration

By: Jay LaCroix

Overview of this book

Linux is everywhere. Whether you run a home office, a small business, or manage enterprise systems, Linux can empower your network to perform at its very best. Armed with the advanced tools and best practice guidance of this practical guide, you'll be able to mold Linux networks to your will, empowering your systems and their users to take advantage of all that Linux-based networks have to offer. Understand how Linux networks function and get to grips with essential tips and tricks to manage them - whether you're already managing a networks, or even just starting out. With Debian and CentOS as its source, this book will divulge all the details you need to manage a real Linux-based network. With detailed activities and instructions based on real-world scenarios, this book will be your guide to the exciting world of Linux networking.
Table of Contents (17 chapters)
Mastering Linux Network Administration
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 10. Troubleshooting Network Issues

No network is perfect. Regardless of how well we plan and implement our infrastructure, problems can and will happen. The most important skill you will need in order to be successful as a network administrator is your ability to troubleshoot issues. When problems occur, your ability to think rationally and narrow down the issue by the process of elimination will carry you through. While it can certainly be stressful when things go haywire, network administrators enjoy the job security. In this chapter, we'll work through troubleshooting some common issues that may come up in Linux networks. In the final chapter of our journey, we will cover:

  • Tracing routing issues

  • Troubleshooting DHCP issues

  • Troubleshooting DNS issues

  • Displaying connection statistics with netstat

  • Scanning your network with nmap and Zenmap

  • Installing missing firmware on Debian systems

  • Troubleshooting issues with Network Manager