Book Image

Mastering Palo Alto Networks - Second Edition

By : Tom Piens aka Piens aka 'reaper'
Book Image

Mastering Palo Alto Networks - Second Edition

By: Tom Piens aka Piens aka 'reaper'

Overview of this book

Palo Alto Networks’ integrated platform makes it easy to manage network and cloud security along with endpoint protection and a wide range of security services. This book is an end-to-end guide to configure firewalls and deploy them in your network infrastructure. You will see how to quickly set up, configure and understand the technology, and troubleshoot any issues that may occur. This book will serve as your go-to reference for everything from setting up to troubleshooting complex issues. You will learn your way around the web interface and command-line structure, understand how the technology works so you can confidently predict the expected behavior, and successfully troubleshoot any anomalies you may encounter. Finally, you will see how to deploy firewalls in a cloud environment, and special or unique considerations when setting them to protect resources. By the end of this book, for your configuration setup you will instinctively know how to approach challenges, find the resources you need, and solve most issues efficiently.
Table of Contents (18 chapters)
16
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17
Index

Controlling the bandwidth with quality-of-service policies

Quality of Service (QoS) is the collective name for several technologies that can help improve the quality of applications, and the data flows that they are applied to, by prioritizing them over other flows or reserving bandwidth to ensure adequate throughput and acceptable latency. In this section, you will learn how QoS marking can be applied to a firewall to interact with network devices downstream.

There are two ways for a firewall to participate in applying QoS to network traffic:

  • Differentiated Services Code Point (DSCP) and Type of Service (ToS) headers, which are “external” markings introduced by a network device or host and intended to be carried all the way to the final destination or until the header is stripped, ensuring all devices in the path are aware of the weight or priority of a packet
  • QoS enforcement through built-in capabilities, which does not alter the header of the...