Certified auditors examine every layer of your network, from firewall rules to wireless, then give you a prioritized plan to harden what we find.
Get Your QuoteA network security audit from Altius IT is a deep, configuration-level assessment of the infrastructure every system in your organization depends on: firewalls, routers, switches, wireless access points, VPN gateways, and segmentation architecture, performed by Certified Information Systems Auditors (CISA).
Also called a network security assessment, the audit evaluates how your network is designed, configured, and monitored, with an optional penetration test to validate defenses against real-world attacks. For industrial environments, the audit extends to OT and critical infrastructure systems such as SCADA and PLCs. You receive a risk-rated report with step-by-step remediation guidance, an Auditor Opinion Letter you can share with clients, and 90 days of free post-audit support.
We evaluate your network from every angle, both from the inside and from an attacker's perspective.
Full internal access. Our auditors review your configurations, rule bases, documentation, and monitoring with complete visibility.
Limited credentials provided. Simulates a compromised user account to test lateral movement and privilege escalation (included with the penetration test add-on).
No prior internal knowledge. Our auditors approach your public-facing addresses the way an external attacker would.
For organizations running industrial control systems, the audit extends to OT networks, including SCADA systems and PLCs, with attention to segmentation between IT and OT environments and the protocols and remote access paths that connect them.
A penetration test can be added to your network security audit to validate your defenses against real-world attack scenarios:
Contact us to discuss adding a penetration test to your engagement.
Our IT security audit covers your full infrastructure, with the network as one of many domains. Our cybersecurity audit evaluates organization-wide attack resistance and detection. The network security audit goes deep on the network layer itself: rule bases, segmentation, wireless, and the devices that move your traffic. Choose this audit when the network is the asset you need assurance over.
A structured, three-phase approach that inventories your devices and sites, tests them from every angle, and leaves your team with a clear remediation plan.
We work with your stakeholders to define scope, inventory in-scope devices and sites, and review your network policies, diagrams, and internal controls. You receive a detailed proposal covering project scope and tasks, pricing options, CVs of the assigned audit team, and sample reports.
Our team combines White Box configuration review of your firewalls, devices, and monitoring with Black Box assessment of your external footprint, plus Gray Box internal testing where a penetration test is included. Work is coordinated with your team and scheduled to avoid disruption to operations.
We deliver a report with prioritized findings, risk ratings, and specific remediation steps for each issue. We then walk your team through the results and remain available for 90 days of free post-audit support to confirm vulnerabilities are properly mitigated.
This audit is for organizations where the network is the foundation everything else runs on.
| Multi-Site & Hybrid Networks | Organizations with on-premises or hybrid networks across one or more sites. |
| PCI DSS Environments | Businesses subject to PCI DSS segmentation requirements. |
| Recent Network Changes | Companies that have recently migrated firewalls or redesigned their network. |
| Wireless-Heavy Sites | Warehouses, campuses, and healthcare facilities that depend on wireless coverage. |
| Industrial Operators | Organizations running OT and SCADA environments alongside their IT network. |
Findings are mapped to the frameworks that matter to your business. PCI DSS requires segmentation controls to be tested at least annually, and every six months for service providers; this audit with the segmentation testing add-on satisfies that requirement with independent, documented evidence.
Every finding includes a risk rating, evidence, and detailed instructions to mitigate or eliminate the issue, from permissive firewall rules to segmentation gaps.
As Certified Information Systems Auditors, we can issue an Auditor Opinion Letter stating your systems meet security and compliance requirements.
Ask questions, validate fixes, and get guidance from the same team that performed your audit.
Each audit is staffed with:
Anyone can call themselves a security consultant. Altius IT is certified as a Certified Information Systems Auditor (CISA) to audit your environment and issue formal reports and recommendations. Our experts have appeared on national television and in more than 40 publications.
Strengthen your firewalls, segmentation, and wireless against evolving threats.
Meet HIPAA, GDPR, NIST, ISO, PCI-DSS, SOX, and other compliance standards.
Safeguard sensitive data, intellectual property, and customer information.
Every engagement includes follow-up support to ensure vulnerabilities are properly mitigated.
Answers to common questions about our network security audit and assessment services.
A network security audit is an independent, configuration-level assessment of your network infrastructure: firewalls, routers, switches, wireless, VPN, segmentation, and monitoring. It verifies that the network is designed, configured, and monitored to provide a secure, segmented, and resilient foundation, and results in a risk-rated report with specific remediation steps.
The audit reviews how your network is configured and verifies controls from the inside. A penetration test attacks the network from the outside or from a foothold inside to prove what is exploitable. We recommend combining them: the audit finds the root causes, the test demonstrates the impact.
The IT security audit covers your full infrastructure, including servers, cloud, identity, and endpoints, with the network as one domain among many. The network security audit dedicates the entire engagement to the network layer, going much deeper on rule bases, segmentation, and network devices.
We analyze your complete rule base for unused rules, overly permissive rules, incorrect ordering, and risky any-to-any entries, and review the firewall's overall configuration, deployment, and management access. The report lists each problematic rule with a specific recommended change.
Yes. Wireless coverage includes encryption standards, authentication, rogue access point detection, and guest network isolation, verifying that wireless access cannot be used to reach systems it should not.
Yes. For industrial environments we extend the audit to OT systems, including SCADA and PLCs, with particular attention to segmentation between IT and OT networks and the remote access paths into them.
Most engagements take two to four weeks from kickoff to final report, depending on the number of sites, devices, and whether penetration testing is included. We confirm the timeline in your proposal before work begins.
Cost depends on the number of sites, firewalls and devices, wireless footprint, and optional penetration testing. We provide a fixed-fee quote after a scoping call, so you know the full cost before work begins.
At minimum annually, and after firewall migrations, network redesigns, mergers, or security incidents. PCI DSS requires segmentation testing at least annually, and every six months for service providers.
Every system, application, and data flow depends on your network. Verify that the foundation holds.
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