Firewall Security Review
Secure Access Through Effective Firewall Management
Firewalls are a critical component of any effective security architecture, they evolve to meet continually changing threats and are complex systems that require specialist skills to architect, install, and manage effectively over many years of service.
During a firewall’s operational lifetime the associated rules and policies can proliferate rapidly, orphaned or unused rules and duplicated policies accumulate, legacy and unwanted protocols might be being used. All of which potentially cause unintended conflicts, unexpected behaviour, traffic bottlenecks, and increase the organisation’s attack surface.
Regular firewall security reviews and optimisation efforts are necessary to streamlines rulesets and reduce the risk of vulnerabilities, ensuring that firewalls continue to meet the organisation’s security requirements, compliance objectives, and ultimately reduce the level of risk that the organisation is exposed to.
Kaon Security have a pragmatic technical approach and ensure any issues that are found during the engagement are communicated in an efficient manner so that our customers can undertake appropriate mitigation work.
Benefits Of A Firewall Security Review
Validate firewall architecture and firewall rules
Understand the network zones
Define the perimeter
Identify issues such as ‘any to any’, orphaned or unused rules, unwanted protocols etc
Deliverables
Stakeholder workshops
A comprehensive report on the activity will be provided with both an executive summary and technical detail including risk ratings and recommendations towards remediation activity.
Frequently Asked Questions
Firewalls play a critical role in protecting networks, systems, and data from cyber threats. However, as environments evolve, firewall configurations, rules, and policies can become increasingly complex and difficult to manage. These FAQs explain what a Firewall Security Review involves, what it assesses, and how it can help identify risks, strengthen network security controls, and support ongoing security improvement.
A Firewall Security Review is an assessment of an organisation's firewall architecture, configurations, rules, and policies. It helps identify security risks, misconfigurations, unnecessary complexity, and opportunities to optimise firewall performance and security.
Over time, firewall rules and policies can become outdated, duplicated, or unnecessarily permissive. Regular reviews help ensure firewalls continue to support security requirements, compliance objectives, and evolving business needs while reducing unnecessary cyber risk.
A Firewall Security Review assesses:
Firewall architecture and network segmentation
Security policies and rule sets
Protocols and access controls
Firewall configurations and overall management practices
Network zones and perimeter security controls
The review identifies weaknesses, security gaps, and areas for improvement that may increase an organisation's attack surface.
A Firewall Security Review helps organisations to:
Validate firewall architecture and configurations
Identify security issues and misconfigurations
Improve visibility of network zones and perimeter controls
Reduce unnecessary exposure and the attack surface
Strengthen the effectiveness of network security controls
Most organisations should conduct a Firewall Security Review annually or whenever significant changes are made to network architecture, firewall configurations, security policies, or business operations. Regular reviews help maintain an effective security posture.
A Firewall Security Review is typically performed through configuration analysis, documentation review, and stakeholder discussions. The review is designed to minimise disruption while providing insight into the effectiveness of existing firewall controls.
A Firewall Security Review provides organisations with an independent assessment of their firewall environment and a clear understanding of any areas that may require attention. Outcomes may include:
A clear understanding of firewall-related risks and exposures
Validation of firewall configurations and management practices
Prioritised recommendations for remediation
Improved visibility of opportunities to strengthen network security controls
A practical roadmap to support ongoing firewall optimisation
These outcomes help organisations to make informed decisions about firewall management and strengthen their overall security posture.
Yes. A Firewall Security Review can identify overly permissive, redundant, outdated, or unused firewall rules that may increase security risk or add unnecessary complexity. Addressing these issues can improve security, performance, and the overall effectiveness of firewall controls.