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OFFENSIVE SECURITY / NETWORK INFRASTRUCTURE

Network Penetration Testing

Identify weaknesses across authorized network infrastructure, exposed services and segmentation boundaries.

Talk to a Security Expert What we test ↓

Networks accumulate. Services get stood up for a project and stay running, firewall rules get widened during an incident and never narrowed, and a flat internal network quietly becomes the shortest route between a low-value foothold and something that matters.

Network testing asks two questions: what is reachable from outside, and what does reaching one internal system let you reach next.

From outside in

The value of the test is in the transitions — what each layer allows through to the next.

  1. EXTERNALExternalInternet-facing addresses and exposed services
    Perimeter controls
  2. PERIMETERPerimeterFirewalls, gateways, remote access, published services
  3. INTERNALInternal networkSegmentation, internal services, lateral reachability
    Segmentation boundary
  4. CRITICALCritical systemsSystems whose compromise carries real business impact

Conceptual. Which layers an engagement covers depends on the authorized scope.

// WHAT AN ENGAGEMENT CAN COVER

What an engagement can cover

External and internal testing are separate activities. Whether an engagement includes one or both is set during scoping.

// METHODOLOGY

Methodology

  1. 01SCOPEConfirm authorized ranges, systems, timing and exclusions in writing.
  2. 02DISCOVERIdentify live hosts and reachable services within that scope.
  3. 03ENUMERATEEstablish what each service is, and how it is configured.
  4. 04ASSESSTest for weaknesses that are relevant to the environment.
  5. 05PATHAnalyse how findings connect into routes toward critical systems.
  6. 06REPORTPrioritised findings with remediation guidance.
// CONTEXT

Why segmentation is usually the finding

Perimeters have generally improved. What has improved less is what happens after something inside the network is reached — through a phished credential, an exposed service or a third-party connection.

If a workstation subnet can reach management interfaces, backups and databases directly, then the difficulty of the initial foothold is doing all the work. Segmentation testing measures how much is really standing between a foothold and the systems that matter.

// WHAT YOU RECEIVE

A report your team can actually act on.

Exact deliverables and their format are confirmed during scoping.

EXECUTIVE SUMMARY

What was assessed, what was found and what it means, written to be read by people who will not read the technical detail.

TECHNICAL FINDINGS

Each finding described with enough precision for an engineer to locate and understand it.

EVIDENCE

Reproduction detail and supporting evidence, so findings can be verified rather than taken on trust.

RISK CONTEXT

Severity considered against your environment, not only against a generic scoring table.

REMEDIATION GUIDANCE

Practical direction on addressing each finding, including where a change belongs architecturally.

RETEST / VALIDATION

Verification that addressed findings no longer reproduce, within the agreed retest scope.

// WHO THIS IS FOR

Organizations this typically applies to.

EnterprisesRegulated industriesOrganizations with on-premise infrastructureHybrid environmentsManaged service providersBusinesses with remote access

Testing is scoped per engagement. Nothing here implies industry-specific certification or accreditation.

// WHEN THIS APPLIES

When Should Network Exposure Be Revisited?

01SITUATIONThe estate grew by acquisitionNetworks were joined and the combined exposure was never assessed.
02SITUATIONSegmentation is claimed but untestedThe diagram shows zones; nobody has verified the rule base agrees.
03SITUATIONNew external exposureServices were published to support remote work or a partner integration.
04SITUATIONPeriodic validation is dueNothing specific changed, which is usually when drift has accumulated.
// RELATED SERVICES

Adjacent parts of the attack surface.

Cloud Penetration TestingModern cloud environments introduce new identities, services and trust relationships. Assess them before those relationships become attack paths.VIEW SERVICE →Red TeamingSimulate realistic adversarial scenarios to evaluate how people, technology and security operations respond to an attack.VIEW SERVICE →Web Application SecurityIdentify security weaknesses across modern web applications before attackers exploit them.VIEW SERVICE →Offensive Security OverviewHow the seven testing services fit together across the attack surface.VIEW OVERVIEW →
// FREQUENTLY ASKED

Questions we get asked before an engagement.

Request a Network Penetration Test

Share the shape of the environment — what is exposed, what is segmented and what matters most — and we will scope the engagement around it.

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