Firewall Policy Analyzer review
A focused, open-source tool for analyzing firewall rules in uploaded CSVs.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Firewall Policy Analyzer is an open-source application for examining firewall policy files, aimed at solo users and small teams that need to inspect rules in uploaded CSVs. It parses protocols, addresses, ports, and actions, then uses a formal firewall-rule model to identify patterns, conflicts, and anomalies. The tool is a focused analysis utility rather than a full policy-management suite, so it suits teams reviewing rule sets more than those coordinating policy changes across operations.
Its workflow connects analysis to a limited editing path: users can inspect rule relationships and anomaly definitions, review recommended actions, optionally modify the rule set in the app, and download the edited rules as CSV. It supports IP, ICMP, TCP, and UDP protocols. Local installation instructions are provided for Ubuntu Linux and Windows; the listed platforms also include web. This makes it relevant to teams comfortable working with CSV policy files and self-hosted software, while organizations seeking change automation or policy simulation will need a broader tool.
The project is open source with a free plan, and its deployment model is on-premises. Its scope has important boundaries: compliance auditing and change automation are not included, and the README notes that overlapping port sets are not handled properly for some shadowing detections. Choose Firewall Policy Analyzer for focused rule inspection and optional CSV edits; consider an alternative if audit workflows, automated changes, or more complete shadowing analysis are central requirements.
Firewall Policy Analyzer pros and cons
- Where it wins
- Detects policy patterns, conflicts, and anomalies in CSV rules
- Visualizes rule relationships and offers recommended actions
- Can modify rules in-app and download the result as a CSV
- Where it doesn't
- Some shadowing detections do not handle overlapping port sets properly
- Does not provide compliance auditing or change automation
- Focused on CSV analysis rather than policy simulation
Firewall Policy Analyzer fact sheet, pricing and score →
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