Book Image

Mastering Palo Alto Networks

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

Mastering Palo Alto Networks

By: Tom Piens aka Piens aka 'reaper'

Overview of this book

To safeguard against security threats, it is crucial to ensure that your organization is effectively secured across networks, mobile devices, and the cloud. 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. With this book, you'll understand Palo Alto Networks and learn how to implement essential techniques, right from deploying firewalls through to advanced troubleshooting. The book starts by showing you how to set up and configure the Palo Alto Networks firewall, helping you to understand the technology and appreciate the simple, yet powerful, PAN-OS platform. Once you've explored the web interface and command-line structure, you'll be able to predict expected behavior and troubleshoot anomalies with confidence. You'll learn why and how to create strong security policies and discover how the firewall protects against encrypted threats. In addition to this, you'll get to grips with identifying users and controlling access to your network with user IDs and even prioritize traffic using quality of service (QoS). The book will show you how to enable special modes on the firewall for shared environments and extend security capabilities to smaller locations. By the end of this network security book, you'll be well-versed with advanced troubleshooting techniques and best practices recommended by an experienced security engineer and Palo Alto Networks expert.
Table of Contents (18 chapters)
1
Section 1: First Steps and Basic Configuration
4
Section 2: Advanced Configuration and Putting the Features to Work
10
Section 3: Maintenance and Troubleshooting

The rollback procedure

If the upgrade causes unexpected issues and troubleshooting is unable to clarify why, the last resort is to roll back to the previous deployment.

If you find yourself in this situation, make sure you do the following:

  • Write down all the symptoms.
  • Note down which troubleshooting steps were taken.
  • In Device | Support, create a Techsupport file as you may need to reach out to Palo Alto Networks support if you are unable to find what went wrong.
  • Save any related files, the CLI output, troubleshooting files, packet captures, and so on in one location.

Once you've documented your troubleshooting efforts, the easiest way to roll back is to switch the sysroot boot partition. The firewall has two system volumes that contain a fully installed PAN-OS, of which only one partition is active. The inactive partition either contains the previously installed version, or the next version if you have just installed it but not rebooted yet.

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