Network Segmentation Review

Validate segmentation controls in your environment such as firewall rules, VLANs, VRFs, and software-defined networking (SDN) approaches are in place as designed and restrict access to other network segments.

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Network segmentation testing evaluates whether the boundaries between different network segments, such as user networks, server environments, and restricted zones, are properly enforced. It simulates attempts to communicate across segments to verify that only authorised traffic is permitted and that security controls effectively restrict unintended access.

Benefits of Network Segmentation Review

Validate security control effectiveness

Confirms that firewalls, access control lists, and other filtering mechanisms are correctly configured and actually enforcing the intended network restrictions.

Identify misconfigurations and unintended access paths

Uncovers routing misconfigurations, overly permissive rules, or links that allow traffic between segments that should otherwise be isolated.

Support compliance and audit readiness

Provides evidence that segmentation controls are actively validated, supporting compliance with regulatory and security framework requirements that mandate verification of network access restrictions.

What is a Network Segmentation Review?

Network segmentation testing is a security assessment that validates the effectiveness of segmentation controls such as firewalls, access control lists (ACLs), VLAN configurations, and routing policies. Testers attempt to access systems across defined network boundaries to confirm that segmentation rules prevent unauthorised connectivity and enforce the organisation’s intended network architecture.

Does my organisation need a Network Segmentation Review?

Organisations that operate complex or sensitive IT environments benefit from network segmentation testing, particularly those handling sensitive data, running critical infrastructure, or maintaining separate security zones, such as corporate, production, management, or restricted networks.

It is especially relevant for government, defence, financial services, healthcare, and organisations required to meet strict security or compliance requirements.

Why is Network Segmentation important?

Effective network segmentation limits the potential impact of a security breach by preventing attackers or malware from moving freely across the network. If segmentation is not implemented or poorly managed, misconfigurations or overly permissive rules may allow unauthorised lateral movement, expose sensitive systems to less trusted networks, increase the attack surface, and make it significantly easier for an initial compromise to escalate into a broader network breach.

Why partner with CyberCX for Network Segmentation Review?

Unmatched expertise

Our team comprises highly certified penetration testers and security consultants with deep experience in real-world attack simulation. They understand business-critical risks and tailor every engagement to your objectives, not just generic vulnerability scans.

Advanced tools and methodologies

We leverage industry-leading tools combined with custom testing frameworks to replicate realistic threat scenarios. This ensures comprehensive coverage of attack vectors like privilege escalation, lateral movement, and data exfiltration, aligned with your agreed objectives.

Proven experience

CyberCX has delivered thousands of penetration tests across regulated industries, cloud environments, and complex enterprise networks. Our experience means we know how to prioritise what matters most for your business and compliance requirements.

Actionable reporting

Our reports go beyond listing vulnerabilities. We provide clear, objective-driven insights, risk prioritisation, and remediation guidance, so you can measure security effectiveness and make informed decisions quickly.

Collaborative and client-focused approach

We don’t just test; we help you mature your security posture over time. Our Network segmentation testing service feeds into broader cyber resilience strategies, ensuring continuous improvement against evolving threats.

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