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

Configuring a DNS proxy

A DNS proxy helps control how internal clients connect to DNS servers and where they get domain information from, or which information they receive.

Important note

Clients must be configured with the firewall’s interface IP set as the DNS server. This can be forced via the DNS attribute in the DHCP server or may need to be set manually. The firewall may need a security rule that allows DNS connections to the firewall interface from the clients, and a second one that allows DNS from the firewall interface out to the internet.

Configure the DNS proxy by following these steps:

  1. Create a new DNS proxy object in Network | DNS Proxy.
  2. Add a name and, if you want to inherit DNS configuration from an upstream DHCP server (ISP), set the inheritance.
  3. Set the primary and secondary DNS server for outgoing DNS requests to servers of your choice, or select Inherit if you want to use your ISP’s DNS servers for generic...