How can an organisation get started with a network security audit?

An organisation can get started by contacting the service provider to discuss requirements, scope, and risk profile; a comprehensive audit will then assess topology, controls, segmentation, and monitoring, culminating in a prioritised remediation plan and guidance aligned to regulatory obligations.

How are the audit findings prioritised and what does remediation guidance include?

Findings are risk-rated and prioritised by severity and remediation effort. The audit provides practical, detailed remediation recommendations organised to help the organisation address the most critical gaps first and plan actionable improvements.

Why is a network security audit important for organisations?

A network security audit identifies control gaps before attackers exploit them, improves visibility into traffic flows, supports regulatory expectations such as NIS2, FCA, and NCSC, and provides a clear roadmap for modernising network defences and evidencing due diligence.

Network Security Audit

Our experts will conduct a comprehensive technical assessment of your organisation’s network infrastructure and security controls. They will evaluate network topology, firewall configurations, access control lists, VPN security measures, logging protocols, wireless security, and incident response strategies, culminating in a detailed report featuring prioritised remediation recommendations tailored to your risk profile and compliance obligations

Comprehensive Technical Review of Network Architecture, Controls, and Segmentation

A detailed technical audit of your organisation’s network infrastructure, security controls, and segmentation architecture. Our network security specialists conduct a systematic review of network topology, firewall rule sets, access control lists (ACLs), VPN and remote access security, network monitoring and logging, wireless security, DNS and DHCP security, and incident detection and response capability — producing a technical findings report with prioritised remediation recommendations aligned to your risk profile and regulatory obligations.

What is a Network Security Audit?

Why a Network Security Audit Matters?

The network is frequently the first line of defence against external attacks, yet many organisations inherit legacy network architectures with poorly documented firewall rules, inadequate segmentation, and limited visibility into traffic flows. Network security gaps enable lateral movement after initial compromise, slow incident detection, and make forensic investigation more difficult. Regulators, including the NIS2 Competent Authorities, FCA, and NCSC, increasingly scrutinise network security posture as part of operational resilience and critical infrastructure assessments. A comprehensive network security audit identifies control gaps before attackers discover them, provides evidence of due diligence, and creates a roadmap for modernising network defences.

Common Use Cases

In the current landscape of cybersecurity threats, understanding and implementing a comprehensive network security audit is crucial for identifying use cases and ensuring organisations are well prepared to defend against potential vulnerabilities.

NIS2 compliance

NIS2 compliance — evidence of appropriate network segmentation and monitoring controls

Cyber insurance underwriting

Cyber insurance underwriting — independent validation of network defence maturity to underwriters

Post-breach network review

Post-breach network review — identifying the lateral movement pathways an attacker exploited

Pre-cloud migration assessment

Pre-cloud migration assessment — baselining current network controls before moving to hybrid/cloud architecture

Regulatory pre-inspection

Regulatory pre-inspection — preparing for FCA/PRA/ICO examination with documented network security posture

Digital transformation security

Digital transformation security — validating network design for new enterprise systems or infrastructure

Zero-trust architecture readiness

Zero-trust architecture readiness — assessing current network capability against zero-trust principles

Board and risk committee reporting

Board and risk committee reporting — independent verification of network security control maturity

Key Points

Network topology mapping and documentation — visual architecture diagrams and data flow analysis.
Network access control list (ACL) review — port-level and protocol-level access validation across network devices.
VPN and remote access security — authentication mechanisms, encryption protocols, and split-tunnelling controls.
Network monitoring and logging review — syslog configuration, SIEM integration, and log retention policies.
DHCP security review — rogue DHCP detection, DHCP snooping, and dynamic address pool management.
Incident detection and response capability — review of IDS/IPS deployment and alert tuning.

Firewall rule review — rule effectiveness analysis, redundancy identification, and rule rationalisation recommendations.
Network segmentation assessment — DMZ design, VLAN isolation, and inter-segment communication controls.
Wireless security audit — SSID configuration, encryption standards (WPA3 readiness), MAC filtering, and guest network isolation.
DNS security assessment — DNSSEC implementation, DNS filtering, and DNS poisoning protection.
DDoS mitigation and network resilience — ingress/egress filtering and rate-limiting controls.
Findings report with risk-rated recommendations prioritised by severity and remediation effort.

Network Security Audit

Frequently Asked Questions

Find answers to your questions about our services and how we can assist you.

What is included in a network security audit?

The comprehensive audit encompasses a thorough assessment of various critical areas, including but not limited to topology, firewall rules, Access Control Lists (ACLs), VPN security measures, network segmentation practices, wireless security protocols, and DNS/DHCP controls. Additionally, it evaluates monitoring systems, logging mechanisms, and detection capabilities to ensure a robust security posture across the entire infrastructure.

Can you assess segmentation?

Yes, absolutely. We thoroughly assess VLANs, DMZs, inter-segment access controls, critical asset isolation measures, and the appropriate restriction of lateral movement paths within the network environment to enhance security and mitigate potential threats effectively.

Will you provide remediation guidance?

Yes, absolutely. Our comprehensive findings are meticulously risk-rated and include detailed, practical remediation recommendations that are thoroughly prioritised based on both severity and the level of effort required for implementation.

Get in Touch

Have questions or need assistance? We’re here to help. Reach out to us anytime, and we’ll respond promptly to your inquiries.

Phone

+44 03303031444

Email

[email protected]