Policy Analyzer
Next-Generation Firewall

Policy Analyzer

Table of Contents

Policy Analyzer

Provides an overview of Policy Analyzer.
Where Can I Use This?
What Do I Need?
  • NGFW (Panorama Managed)
  • VM-Series, funded with Software NGFW Credits
    (Panorama Managed)
  • Prisma Access (Panorama Managed)
  • AIOps for NGFW Premium license (use the Strata Cloud Manager app)
Updates to your Security policy rules are often time-sensitive and require you to act quickly. However, you want to ensure that any update you make to your Security policy rulebase meets your requirements and does not introduce errors or misconfigurations (such as changes that result in duplicate or conflicting rules).
Policy Analyzer in
Strata Cloud Manager
enables you to optimize time and resources when implementing a change request. Policy Analyzer not only analyzes and provides suggestions for possible consolidation or removal of specific rules to meet your intent but also checks for anomalies, such as Shadows, Redundancies, Generalizations, Correlations, and Consolidations in your rulebase.
Use Policy Analyzer to add or optimize your Security policy rulebase.
  • Before adding a new rule
    —Check to see if new rules need to be added. Policy Analyzer recommends how best to change your existing Security policy rules to meet your requirements without adding another rule, if possible.
  • Streamline and optimize your existing rulebase
    —See where you can update your rules to minimize bloat and eliminate conflicts and also to ensure that traffic enforcement aligns with the intent of your Security policy rulebase.
Analyze your Security policy rules both before and after you commit your changes.
  • Pre-Change Policy Analysis
    —Enables you to evaluate the impact of a new rule and analyze the intent of the new rules against the rules that already exist to recommend how to best meet the intent.
  • Post-Change Policy Analysis
    —Enables you to clean the existing rulebase by identifying Shadows, Redundancies, and other anomalies that have accumulated over time.
  • Policy Analyzer requires the Cloud Connector Plugin 1.1.0 on your Panorama appliance.
  • Policy Analyzer requires Panorama to be updated to PAN-OS version 10.2.3 or a later version.

Types of Anomalies That Policy Analyzer Detects

Policy Analyzer detects the following types of anomalies across your Security policy rulebase:
  • Shadows—Rules that are not hit because a rule higher in the rulebase covers the same traffic.
    Security policy rules are evaluated in the rulebase from the top down so shadows are created when a rule higher in the rulebase matches the same traffic that a rule lower in order matches and the rules are configured with a different action. If you remove the rule lower in order, the Security policy does not change.
  • Redundancies—Two or more rules that match the same traffic and are configured with the same action.
  • Generalizations—When a rule lower in the rulebase matches the traffic of a rule higher in the rulebase, but not the other way around, and the rules take a different action. If the order of the two policy rules is reversed, the Security policy is impacted.
  • Correlations—Rules that correlate with another rule when one rule matches some packets of the other rule but results in a different action. If the order of the two rules is reversed, the Security policy is impacted.
  • Consolidations—Rules that you can consolidate into a single rule because the action is the same and only one attribute is different. You can merge the rules into a single rule by modifying the attributes of one of the rules and deleting the others.

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