Firewall rule sets accumulate over years of IT changes outdated rules, shadow rules, and 
overly permissive policies that no one remembers creating. In 2024, misconfigured firewalls 
were a contributing factor in several high-profile breaches. Regular audits are now a compliance 
requirement under frameworks including PCI DSS and ISO 27001.
Firewall configuration audit reviewing security rules and network protection settings

Key Benefits

Rule-by-rule analysis of firewall policies across all vendors (Fortinet, Palo Alto, Cisco, 
etc.) 
Identification of unused, duplicate, and overly permissive rules 
Zone-to-zone policy review for unintended traffic paths 
Change management process assessment 
PCI DSS and ISO 27001 compliance gap mapping
Cybersecurity experts analyzing firewall settings for vulnerabilities

What We Do

Securiglobe’s Firewall Configuration Audit delivers a thorough, vendor-neutral review of your 
firewall rule sets, zone policies, and change management practices. We identify redundant 
rules, dangerous exposures, and compliance gaps and provide a clean, prioritized 
remediation list your team can action immediately.

How It Helps Your Business

Firewalls are only as good as their configuration. Years of ad-hoc rule additions create hidden 
gaps that attackers and auditors will find. Securiglobe’s audit gives you a clean, 
defensible, and compliant firewall policy. 

What We Assess

Full review of all firewall rules — identifying any-any rules, overly broad permits, shadow rules, and rules that conflict with security policy

Review of network zone design, trust levels, DMZ configuration, and whether zone policies match intended segmentation

Management access controls, administrative authentication, out-of-band management, and logging of admin actions

Source and destination NAT rules, hairpin NAT, and rules that may inadvertently expose internal services

HA configuration consistency, failover testing status, and synchronisation of rules across HA pairs

Log configuration, which traffic is logged, SIEM integration, and alerting rules for critical events

Alignment with vendor-specific hardening guidance for Palo Alto, Fortinet, Cisco, Check Point, and others

Review of change management processes for firewall modifications approval, testing, and rollback procedures

Our Process

Scoping & Access

We identify all firewalls in scope and obtain read-only access to configuration files and management consoles.

Configuration Export

We export firewall configurations, rule bases, and policy objects for analysis in a secure, isolated environment.

Automated Analysis

Automated policy analysis identifies shadow rules, redundant rules, any-any permissions, and compliance deviations at scale.

Manual Expert Review

Our firewall specialists manually review findings, assess business context, and identify risks that automated analysis may miss.

Risk Rating

Findings are rated by severity critical rules that directly expose the network are prioritised above housekeeping recommendations.

Reporting & Debrief

Full technical report with rule-level findings, a rationalised ruleset recommendation, and an executive summary for leadership.

Frequently Asked Questions

Do you need live access to our firewall management console?

We can work from exported configuration files alone, which is our preferred method for minimising operational risk. Where live access would add value, we use read-only credentials.

We support all major enterprise firewall platforms including Palo Alto Networks, Fortinet FortiGate, Cisco ASA and FTD, Check Point, Juniper SRX, and Sophos.

We have analysed rulesets containing tens of thousands of rules. We use a combination of automated tooling and expert review to handle large rulesets efficiently.

Deliverables

Who Is This For?

Related Services

Network security assessment identifying vulnerabilities and threats

Dedicated deep-dive into firewall rulesets and policies

Security Operations Center (SOC)

Continuous monitoring following the assessment to catch what static reviews miss

Vulnerability Assessment and Penetration Testing

Validate and exploit network vulnerabilities identified during the assessment

Are your rulebases optimized and compliant, or leaving unauthorized backdoors open? Contact our security experts today for a comprehensive Firewall Configuration Audit.