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
Other Books You May Enjoy
17
Index

Creating NAT rules

Unless you are one of the lucky few organizations that were able to get their very own A (/8) or B (/16) class subnets, your internal network segments will most likely be made up of one or several of the well-known RFC1918 private IP address allocations: 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16. NAT is needed in order for your hosts to be able to reach the internet and your customers and partners to reach publicly available resources hosted in your data center. NAT rules can be configured through Policies | NAT.

For this section, keep the following interface setup in mind:

Figure 3.38 – Interface zone and IP configuration

Figure 3.42: Interface zone and IP configuration

Address translation comes in different flavors depending on the direction and purpose, each with its own nuances. Let’s first review inbound NAT.

Inbound NAT

For inbound NAT, it is important to remember that the firewall is zone-based and that the source and destination zones are determined before the NAT policy...