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Cybersecurity & Compliance

Network Security Assessment

A review of your internal and external network posture (exposed services, segmentation and misconfigurations) so you know exactly what is reachable, from where, and what to close down first.

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Overview

What can be reached on your network

A network security assessment answers a deceptively hard question: what is actually reachable on your network, from where, and how well is it contained? We map your external attack surface (the services exposed to the internet) and examine internal segmentation to understand how far an attacker could move if a single host were compromised. The review covers exposed and unnecessary services, weak or default configurations, patch and version exposure on network-facing systems, and the effectiveness of segmentation between environments such as corporate, production, and management networks. Findings are prioritised by real-world exploitability and blast radius rather than raw count, so you spend remediation effort where it reduces the most risk. The result is a clear picture of your network posture and a ranked list of changes to harden it.

What's included

  • External attack-surface mapping
  • Internal segmentation and lateral-movement review
  • Exposed-service and misconfiguration discovery
  • Patch and version exposure checks on network systems
  • Risk-ranked remediation plan
Who it's for

Who needs this visibility

  • Organisations running their own infrastructure, offices, or data-centre estate who need to know what can be reached from outside.
  • IT and infrastructure teams who inherited a network built over many years with limited documentation of what is exposed.
  • Companies with hybrid cloud and on-premises environments wanting to verify that segmentation between them actually holds.
  • Businesses facing an audit, insurance review, or customer requirement that asks for periodic network penetration testing.
When you need it

When the network needs a hard look

  • You are unsure what services are currently exposed to the internet after years of firewall changes, new sites, and cloud migrations.
  • You want to know how far an attacker could move laterally if one laptop or one server in the office were compromised.
  • You have merged with or acquired another company and need to understand the risk before connecting the two networks.
  • Segmentation between corporate, production, and management networks exists on paper, and you need it verified in practice.
  • An insurer or enterprise customer has asked for evidence of an independent internal and external network pentest.
Deliverables

The picture you walk away with

Every engagement ends with documents and fixes your team can act on, rather than a presentation.

  • An external attack-surface inventory listing every reachable host, service, and version we identified
  • An internal assessment of segmentation and lateral-movement paths, with the routes we were able to traverse
  • Findings ranked by real-world exploitability and blast radius rather than by raw scanner count
  • A prioritised hardening plan covering exposed services, weak configurations, and patch exposure
  • An executive summary of network posture suitable for management, auditors, or customers
How it works

How we map your perimeter and interior

The steps are the same whether the work is an assessment or a build, so you always know what happens next.

  1. 1

    Discover

    We start by understanding your systems, goals, and constraints, including scope, risk tolerance, and what success looks like, so the work is aimed at your problem rather than a generic template.

  2. 2

    Assess or build

    For security work, we test and analyse against recognised standards. For development, we build in small, reviewable increments. Either way, you see progress early and can change direction.

  3. 3

    Report or ship

    You get clear, prioritised deliverables, either a report your engineers can act on or working software shipped to your environment, with the context to understand what was done and why.

  4. 4

    Support

    We stay available after delivery: retesting fixes, iterating on the product, and answering the questions that come up once real users and real traffic arrive.

FAQ

Network Security: common questions

Do you do a free network security scan?

The free 30-minute assessment covers your externally reachable surface: which services answer from the public internet, what they reveal about themselves, and where your perimeter is wider than you think. It is a manual review by a practitioner, not an automated scan you receive as a PDF. Internal segmentation and lateral-movement testing need credentialed access and a paid engagement. The free review is usually enough to tell you which of the two you need first.

How do you price a network security assessment?

Pricing follows scope, which we agree with you before any testing. The drivers are the number of live hosts and IP ranges in scope, how many physical or cloud sites are included, whether you need external testing only or internal testing as well, and whether segmentation between specific network zones must be verified. We give you a written scope and fixed quote, so cost does not move mid-engagement.

What is the difference between an internal and an external network pentest?

An external pentest tests what an attacker on the internet can reach and exploit: your perimeter, exposed services and public-facing infrastructure. An internal pentest assumes an attacker is already inside, via a phished laptop or a compromised server, and measures how far they can move. Most organisations need both, because a hard perimeter around a flat internal network still means one compromised host reaches everything.

Will network testing take systems offline?

No. We agree rules of engagement in writing first, including scan intensity, testing windows, out-of-scope systems, and an escalation contact. Fragile devices such as older industrial equipment, medical systems, or legacy appliances are identified during scoping and handled with care or excluded. Denial-of-service techniques are excluded by default. If anything behaves unexpectedly during testing, we stop and contact you immediately.

How does this relate to a firewall audit?

They answer different questions and work well together. A network security assessment tests what is reachable in practice, from the outside and from inside your network. A firewall audit reviews the rule-base itself to find overly permissive, redundant, and shadowed rules that explain why things are reachable. Testing shows the symptom; the rule-base review usually shows the cause. Many clients run both to get a complete perimeter picture.
Related services

Complementary assessments

Teams that come to Safe Tech AI for network security frequently need these too.

  • Firewall Audit

    A rule-base review that finds overly permissive, redundant, and risky firewall rules: the misconfigurations that quietly widen your attack surface as rule-sets grow over years.

    Learn more

  • Endpoint Security Assessment

    A review of device-level controls, hardening, and detection coverage across laptops, servers and workstations, where attacks most often land and where good defaults matter most.

    Learn more

  • Digital Forensics & Incident Response

    Post-incident investigation, containment, and reporting when something has gone wrong. We help you understand what happened, limit the damage, and come away with clear evidence and lessons to prevent a repeat.

    Learn more
Further reading

Guides on network security

Find out whether your segmentation holds in practice.

Get an external attack-surface inventory, a lateral-movement review, and a hardening plan ranked by real-world exploitability and blast radius.

Book a network security assessment