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See Your Network the Way an Attacker Does

Network Penetration Testing Services

Firewalls and patching policies look fine on paper until someone tries to break them. Our testers manually probe your internal and external network infrastructure to find the misconfigurations, weak credentials and unpatched services that turn a single foothold into a full compromise.

76 reviews · Clutch47 reviews · G2Manual-first testing
Certified Experts
OSCP, CEH, CRTP & industry-certified testers.
Real-World Approach
Manual testing with real-world attack techniques.
Actionable Reporting
Detailed findings with clear risk ratings and remediation.
Confidential & Secure
Strict NDA, data protection & privacy practices.

// About Network Penetration Testing

Understanding What an Attacker Could Actually Reach

A network penetration test looks past the configuration documents and tests what your infrastructure actually allows. We probe firewalls, exposed services, VPN gateways and internal segmentation the way a real attacker would, then map out exactly how far a single compromised device or account could take them.

Whether your infrastructure sits on premises, in a UK data centre, or across several offices, our testers scope the engagement around your real environment. We flag not just missing patches, but the chains of small misconfigurations that add up to serious risk.

  • Real Attack Path Mapping
  • External and Internal Coverage
  • Segmentation and Patching Validated
  • Business Impact Focused Reporting

// Coverage

What We Cover

External Network Testing

Assessment of your internet-facing infrastructure from an outside attacker's perspective.

Internal Network Testing

Assessment of what a compromised device or malicious insider could reach.

Firewall and Segmentation Review

Testing of rule sets and boundaries between network zones.

VPN and Remote Access Testing

Assessment of the gateways your teams use to connect remotely.

Credential and Password Policy Testing

Testing of authentication strength across network services.

Legacy System Exposure

Identification of outdated or unsupported systems still connected to the network.

// Methodology

Our Testing Process

  1. 01

    Scoping and Rules of Engagement

    We agree scope, testing windows and any systems that require special handling.

  2. 02

    Reconnaissance and Enumeration

    We identify live hosts, open services and exposed infrastructure across the target range.

  3. 03

    Vulnerability Analysis

    We identify weaknesses through a mix of automated tooling and manual technique.

  4. 04

    Exploitation and Lateral Movement

    We safely demonstrate real world impact, including how far a compromise could spread.

  5. 05

    Reporting and Retest

    You receive a full report with prioritised remediation and a free retest once fixes are in place.

// Ready when you are

Put your network penetration testing services to the test.

// Impact

Why Network Penetration Testing Matters

One Weak Service Is Often Enough

A single unpatched or misconfigured system can give an attacker a foothold that scanning alone never reveals.

// How We Test Your Network

  • External attack surface enumeration
  • Service and version fingerprinting
  • Vulnerability identification and validation
  • Credential attacks and password policy testing
  • Network segmentation and firewall rule testing
  • Lateral movement and privilege escalation testing
  • Manual exploitation of confirmed weaknesses

What you get

A risk-rated list of exploitable findingsA clear map of possible attack pathsA free retest once fixes are applied

// Tools We Use

NmapNessus and OpenVASMetasploit FrameworkResponderNetExecBloodHound

// Why Choose Pluto Cyber Security

Network Testing That Reflects Real Attacker Behaviour

We do not stop at a vulnerability list. Our testers chain findings together the way a real attacker would, so you understand not just what is wrong, but what it would actually let someone do.

Certified Consultants

Our team holds OSCP, GPEN, GIAC and CISSP infrastructure testing certifications.

Manual-First Testing

We validate every finding by hand rather than relying on scanner output alone.

Business Impact Reporting

Every finding is explained in terms of what it means for your organisation, not just its technical severity.

Aligned to UK Expectations

Testing follows a CREST-aligned methodology and NCSC guidance on network security.

// FAQ

Questions, answered.

// typical reply within one business day

External testing looks at what an attacker on the internet could reach. Internal testing assumes a foothold already exists, whether from a compromised device or a malicious insider, and tests how far that foothold could spread.

Get started

Ready to Scope Your Network Penetration Testing Services?

Tell us what you need tested. We reply with honest guidance and a fixed-scope quote, usually within one business day.