# Firewall Audit Tool (Multi-Vendor Config Audit)

> A firewall audit tool that reads configuration directly: audit policies, NAT, and objects, flag shadowed and overly broad rules, and prove every change with admin attribution across Palo Alto, FortiGate, Cisco, and Juniper.

Last updated: July 2026

SAMURAI is a self-hosted firewall audit tool that reads configuration state directly from the device across Palo Alto, FortiGate, Cisco FMC/FTD and ASA, and Juniper SRX. A firewall configuration audit becomes an export instead of a fire drill.

- **Rule hygiene findings**: shadowed, redundant, and overly broad rules flagged automatically across the whole rule base.
- **Effective access**: what each rule really permits, with objects resolved recursively and NAT applied.
- **Change attribution**: every policy change detected from real device state and attributed to an admin.
- **Configuration audit trail**: snapshot history you can diff between any two points in time.
- **Exportable evidence**: CSV, XLSX, HTML, or PDF, plus 140+ CIS checks on Cisco IOS-XE, NX-OS, IOS-XR, and ASA.

It audits configuration, not logs, and does not run automated rule-recertification campaigns; it produces the analysis those workflows consume.

## Configuration audit vs log-based reporting

| | SAMURAI | Log-based reporting tools |
|---|---|---|
| Data source | Configuration state read from the device | Syslog and traffic logs |
| What the audit shows | Rules, hygiene, effective access, and who changed what | What traffic passed or was denied |
| Change accountability | Every change attributed to an admin | Not the focus of log reporting |
| Scope | Firewalls plus routers, switches, ACI, ISE, and vCenter | Usually firewall logs only |

## Frequently asked questions

### What is a firewall audit tool?

A firewall audit tool reads firewall configuration and helps you verify it: what the rules permit, whether any are shadowed, redundant, or overly broad, and who changed them since the last review. SAMURAI does this from configuration state across Palo Alto, FortiGate, Cisco, and Juniper, and exports the evidence.

### How do I audit firewall rules with it?

Register your firewalls; SAMURAI syncs their configuration and runs the Policy Analyzer over the rule base. You get shadowed, redundant, and overly broad findings, effective-access per rule, and a change timeline with admin attribution, all searchable and exportable.

### Can it prove who changed a firewall rule?

Yes. Changes are detected from real device state and attributed to the admin (commit-correlated on PAN-OS, transaction-grouped on APIC, time-windowed on FortiOS/ISE/vCenter), so the audit trail names the author, not just the change.

### Which firewalls can it audit?

Palo Alto (PAN-OS), FortiGate (FortiOS), Cisco FMC/FTD and ASA, and Juniper SRX (Junos OS), plus ACL visibility on Cisco routers, switches, and ACI fabrics.

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Canonical page: https://nometa.az/en/firewall-audit-tool/
Part of SAMURAI, a self-hosted, multi-vendor network monitoring & security platform. Overview: https://nometa.az/llms.txt
Contact: info@nometa.az · Docker Hub: https://hub.docker.com/r/beyrak44/samurai