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Internal Network Penetration Testing

We simulate real-world attacks against your internal network and infrastructure (Active Directory, VPNs, firewalls, switches, WAFs, wireless, OT/ICS segments) to find entry points, lateral movement paths and persistence mechanisms before real attackers do.

Methodology

  1. Scope & Recon: Define IP ranges, VPNs, exposed services and admin endpoints. Collect user credentials from DarkNet and and Threat Intelligence sources.

  2. Automated Discovery: Nmap, Nessus/Qualys, and other tools for broad coverage.

  3. Manual Validation & Exploitation: Exploit chains, credential reuse, config-based exploits (Metasploit, custom).

  4. Lateral Movement & Privilege Escalation: RDP/SMB pivots, Pass-the-Hash, Kerberos evaluation.

  5. Segmentation & Resilience Checks: Microsegmentation review, ACL checks, east-west traffic testing.

  6. Reporting & Remediation: Prioritized findings, PoCs, concrete remediation steps, retest.

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Why it matters / Risks

Unpatched hosts, exposed management ports, or weak segmentation enable ransomware, data exfiltration and persistent attacker footholds. Network weaknesses are the fastest route from perimeter compromise to critical system takeover.

Typical vulnerabilities we identify

  • Default/weak credentials

  • Open management ports (RDP, SSH, SMB)

  • Outdated firmware and missing patches

  • Misconfigured VLANs/ACLs and poor segmentation

  • Weak VPN/remote access setups

  • Unencrypted internal protocols, incorrect DNS/NTP setups

Typical outcomes & deliverables

  • Executive summary with business impact

  • Technical report with reproducible PoCs and CVSS/business-impact ratings

  • Prioritized remediation list + config snippets (firewall rules, ACLs, VPN hardening)

  • Optional: live remediation walk through and retest

Timeline & Pricing (guideline)

Cost: €8,000 – €30,000 (scope dependent)
Duration: 1–3 weeks (Discovery → Execution→ Reporting)
Downtime: Minimal — scheduled and controlled

Prerequisites

  • Scope (IP ranges), authentication details for deeper tests optional

  • Emergency contact & maintenance windows

  • For internal tests provide VPN/Jump-host or on-site access where required, or application of our physical pentest box

FAQ

Will the test cause outages?
Not typically — we perform risk-aware testing and coordinate destructive steps.
Do you need creds?
Authenticated testing is recommended for full coverage, but black-box is possible.
Retest included?
Yes — one retest after remediation is included.

Why Exploit Labs?

We don’t hand you a list of trivial findings — we deliver exploitable attack chains and remediation that forces permanent improvement. Offensive-grade red teamers, critical-infrastructure experience, and no-nonsense remediation plans.