Network Penetration Testing
Simulate real-world attacks across your external, internal, AD, and wireless networks.
What this assessment covers.
Your network is the backbone of your organisation — and attackers know it. DERISK’s Network Penetration Testing service provides a comprehensive assessment of your entire network infrastructure, covering four critical areas: External Network Penetration Testing, Internal Network Penetration Testing, Active Directory Penetration Testing, and Wi-Fi Penetration Testing.
External Network Penetration Testing simulates an attacker targeting your internet-facing systems from the outside, identifying perimeter weaknesses before they can be breached. Internal Network Penetration Testing assesses what an attacker could achieve once inside your network — mapping attack paths, credential exposure, and lateral movement opportunities. Active Directory Penetration Testing deeply analyses your identity infrastructure — Kerberos, ACLs, GPOs, and trust relationships — to uncover paths to domain compromise. Wi-Fi Penetration Testing evaluates your wireless networks for weak encryption, rogue access points, and configuration flaws that could allow attackers to intercept traffic or gain access to your network.
Together, these four assessments give you a complete picture of your network security posture from every angle an attacker would attempt. All findings are published in real time to the DERISK PTaaS portal with attack path visualisation and remediation guidance.
How we test.
A structured, expert-led methodology from initial reconnaissance through to real-time reporting and remediation guidance.
- 01
External Network Penetration Testing
We simulate an attacker targeting your internet-facing systems from the outside — scanning perimeter defences, identifying exposed services, and attempting to breach your external boundary to uncover weaknesses before real attackers do.
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Internal Network Penetration Testing
Starting from a position similar to an insider or compromised workstation, we map the internal network — hosts, services, shares, and trust relationships — and chain vulnerabilities to simulate lateral movement and privilege escalation.
- 03
Active Directory Penetration Testing
We deeply analyse Active Directory — Kerberos, ACLs, GPOs, trust relationships, and credential storage — to uncover paths to domain administrator and other high-privilege targets.
- 04
Wi-Fi Penetration Testing
We evaluate your wireless networks for weak encryption protocols, rogue access points, misconfigured authentication, and configuration flaws that could allow attackers to intercept traffic or gain unauthorised network access.
- 05
Attack Path Exploitation & Lateral Movement
We chain discovered vulnerabilities and misconfigurations across all four areas to simulate how an attacker could pivot through your network and escalate their access to critical systems.
- 06
Real-time findings published to the DERISK PTaaS portal
Attack paths and vulnerabilities across all network assessments are published live to the PTaaS portal with visualisation, so you can see exactly how an attacker could move through your environment.
- 07
Reporting & Remediation guidance
You receive a detailed report with attack path visualisations, risk-rated findings, and prioritised remediation guidance covering external, internal, AD, and wireless network controls.
Why teams choose us.
Expert-led, manually validated, and delivered through the DERISK PTaaS platform for continuous visibility and rapid remediation.
Outstanding Features
- ✓Complete network coverage: External, Internal, Active Directory, and Wi-Fi assessments in one engagement
- ✓Real-time attack path visualisation and reporting through the DERISK PTaaS platform
- ✓Deep Active Directory and identity infrastructure assessment
- ✓Wireless security evaluation including encryption, rogue access points, and authentication flaws
Why Choose Our Service?
- ▸Four-in-one coverage: Assess external, internal, AD, and Wi-Fi networks in a single engagement for complete visibility
- ▸Active Directory expertise: Deep assessment of identity infrastructure and privilege management
- ▸Attack path analysis: Understand how seemingly minor weaknesses can lead to full domain compromise
- ▸Lateral movement simulation: Validate an attacker’s ability to pivot across your entire network estate
Frameworks & standards.
Testing is aligned with industry-recognised frameworks and standards to ensure comprehensive, repeatable coverage.
What you receive.
Everything you need to understand, prioritise, and remediate findings — delivered through the platform with ongoing validation.
Network Pentest questions.
What is the difference between external and internal network testing?
External testing simulates an attacker on the internet with no prior access, probing your perimeter. Internal testing assumes a foothold — a compromised laptop or a malicious insider — and measures how far an attacker can move laterally and escalate privileges once inside.
Is Active Directory testing included?
Yes. AD is central to internal network testing: we assess Kerberos configuration, delegation, ACLs, credential hygiene, and the privilege-escalation paths that lead to domain compromise.
How disruptive is network testing?
Testing windows, excluded hosts and intensity are agreed in advance, and denial-of-service techniques are excluded unless explicitly requested and scheduled. You can audit and stop activity in real time from the platform.
How quickly will we see results?
Initial confirmed findings appear on the DERISK platform within 8 hours of kickoff, critical issues are validated and published within 2 hours of discovery, remediation retests complete within 24 hours, and the full report lands within 2 business days of engagement close.
Often scoped together.
Internal Network Pentest
Assess what an attacker could achieve once inside your network.
External Network Pentest
Simulate an attacker targeting your internet-facing systems from the outside.
Wi-Fi Network Pentest
Evaluate your wireless networks for weak encryption, rogue access points, and configuration flaws.
Attack Surface Pentest
Discover every exposed asset before attackers do.
Ready to secure your assets with Network Pentest?
Get in touch with DERISK to schedule an assessment or learn more about how our expert-led testing can strengthen your security posture.
Request a demo ↗