Hard2bit
Critical Infrastructure · Technical Security Audit Network · Firewall · Segmentation · Active Directory · Hybrid

Infrastructure & Network Security Audit to reduce real risk and accelerate remediation.

We identify weak configurations and common compromise paths across firewalls, segmentation, Active Directory, servers and hybrid environments. You get a prioritized backlog and a 30/60/90-day plan with evidence useful for ENS / ISO 27001 / NIS2 / DORA.

What a “real” infrastructure audit includes

Not a generic checklist. We review configuration, architecture and admin paths to close common routes to ransomware, privilege abuse and accidental exposure.

Network audit (perimeter + core)

Architecture review, segmentation, exposure and controls: firewalls, VPN, corporate Wi-Fi, routing, VLANs, ACLs and remote access.

Active Directory security review

Configuration, delegations, privileged accounts, GPOs, inheritance, paths to elevated privileges and practical hardening measures.

Systems & services hardening

Windows/Linux, critical services, secure baselines, inventory, attack surface reduction and configuration management.

Hybrid infrastructure, cloud & virtualization

VMware/Hyper-V, backup/DR, hybrid connectivity, identity, plus posture/control review where cloud workloads exist.

Typical findings that open the door

Most severe incidents rely on three things: poor segmentation, overly broad privileges, and exposed surfaces. We prioritize what reduces operational risk the fastest.

Overly permissive firewall rules HIGH
Insufficient segmentation (lateral movement) CRITICAL
Excessive AD privileges (Tier 0 exposure) CRITICAL
Legacy services / unnecessary open ports HIGH
Backups without isolation / incomplete restore testing HIGH

Approach aligned with security best practices and hardening benchmarks (NIST / CIS).

What you get out of it

Instead of a never-ending PDF, you get an executable plan: quick wins, backlog and roadmap. This maps well to compliance and audit programs.

Executive report (leadership)

Top risks, exposure, impact, priorities and roadmap.

Technical report (IT teams)

Findings, evidence, affected configuration, recommendations and closure steps.

Prioritized backlog

Actionable list by severity, estimated effort and dependencies.

Readout session

Alignment with owners, decisions and next steps.

Methodology

Based on NIST (Identify/Protect/Detect/Respond/Recover) and CIS Controls/Benchmarks.

Discovery & scope (RoE)

Scope, goals, exclusions, windows, safety thresholds and sources (config dumps, inventory, telemetry, diagrams).

Real attack surface & dependencies map

Logical topology, critical flows, admin paths, identities, third parties and hybrid connectivity.

Configuration & posture review

Non-intrusive technical configuration analysis, compared with best practices and benchmarks (CIS/NIST).

Risk & prioritization (real impact)

Prioritize by exploitability + business impact: ransomware, outage, exfiltration, fraud, persistence.

30/60/90 plan + actionable backlog

Immediate quick wins, structural improvements, suggested owners and audit-ready evidence.

Note on AD privilege hygiene

In many organizations, the biggest risk multiplier is privilege abuse. That’s why we focus heavily on privileged accounts, admin tiering, and safer administration patterns.

Frequently asked questions

How is this different from a pentest or a vulnerability scan?

A scan detects CVEs and obvious misconfigurations. An infrastructure and network audit reviews architecture, admin paths, segmentation, identities and real configuration (firewall/AD/systems) to reduce attack surface and operational risk.

Will the audit disrupt services?

No. We work non-intrusively: configuration review, evidence and controlled discovery. If any active test is proposed, it is agreed in advance (windows and RoE).

Does it include Active Directory and privileged accounts?

Yes. We evaluate privilege exposure, delegations, tiering, GPOs, inheritance and typical escalation paths. We propose practical measures to reduce paths to admin/domain compromise.

Is it useful for ENS / ISO 27001 / NIS2 / DORA?

Yes. We map findings to controls and audit-ready evidence (asset inventory, secure configuration, hardening, segregation, continuity and logging).

What is the typical duration?

Usually 2–4 weeks depending on size, sites, number of firewalls/switches, AD complexity and hybrid environments.

Want to reduce risk in your IT core?

We tell you what to fix first, how, and why—with evidence and a practical execution plan.

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