Firewall Review

A firewall review is a structured examination of an organisation's firewall configurations and rule sets to identify redundant, overly permissive, or otherwise risky rules that may have accumulated over time. Firewalls remain a foundational control for segmenting networks and restricting traffic to only what is necessary, but their effectiveness depends entirely on how well their rule bases are maintained. As networks grow and change, rule sets often become cluttered with outdated entries that no longer reflect current business needs, quietly widening the attack surface.

Why This Matters

Overly broad or forgotten firewall rules can allow unnecessary access between network segments, exposing sensitive systems to threats that proper segmentation would otherwise have contained. Because firewall changes are often made incrementally by different administrators over time, without a periodic review it is easy to lose sight of why a rule exists or whether it is still needed. A regular firewall review helps ensure that network access controls continue to reflect the organisation's actual security policy rather than a historical accumulation of exceptions.

How We Help

Rule Base Analysis

We analyse existing firewall rule sets to identify duplicate, shadowed, unused, or overly permissive rules, giving administrators a clear picture of where cleanup is needed.

Policy Alignment Review

We compare firewall configurations against the organisation's intended network security policy and segmentation design, highlighting discrepancies between documented intent and actual configuration.

Change Management Assessment

We review the processes used to request, approve, and implement firewall changes, helping organisations establish disciplined change control that prevents rule bases from drifting out of control again.

Remediation Recommendations

We provide prioritised, practical recommendations for tightening rule sets, removing unnecessary access, and improving ongoing firewall governance without disrupting legitimate business traffic.

Who Needs This

• Organisations that have not reviewed firewall configurations in some time
• Businesses undergoing network segmentation or infrastructure changes
• Companies preparing for security audits or certifications
• Organisations managing complex, multi-site network environments

Our Approach

We approach firewall reviews with an understanding that overly aggressive changes can disrupt business operations, so recommendations are sequenced and validated carefully before implementation. Our goal is to leave organisations with both a cleaner rule base and a repeatable process for keeping it that way going forward.

Get in Touch

To discuss how we can support you with firewall review, write to us at info@agarwalurs.com.