External Infrastructure
Testing
We replicate the perspective of a real-world attacker — assessing everything your organisation presents to the public internet.
Overview
External Infrastructure Testing External infrastructure testing focuses on identifying vulnerabilities in the systems and services that are exposed to the public internet. These may include web servers, email systems, firewalls, VPN gateways or any device or application that can be reached externally. The goal is to assess what an attacker could discover and exploit without needing any internal access to your organisation. This type of testing replicates the perspective of a real world threat actor scanning the internet for exposed systems and weak points. It provides valuable insight into how well your external defences are configured and whether any overlooked vulnerabilities could put your business at risk.
Why It Matters
Your external infrastructure is often the first point of contact between your organisation and potential attackers. If these systems are misconfigured, unpatched or poorly protected they can be exploited to gain unauthorised access, steal data or act as an entry point for further attacks. Many organisations are not fully aware of what is exposed to the internet or how it behaves under scrutiny. External infrastructure testing brings clarity to this by identifying weaknesses before they are found and used by someone with malicious intent. It also supports risk management, compliance and security best practices by providing evidence of how your perimeter defences perform under real conditions.
In Summary
External infrastructure testing is a vital part of a robust cyber security strategy. It ensures that your internet facing systems are not leaving the door open to threats and provides confidence that your organisation is properly defending its digital perimeter. Whether you are a growing business hosting your own services or a larger organisation managing a complex network of online systems, regular testing is essential to stay ahead of evolving threats and maintain trust with clients and partners.
Why Organisations Choose This Assessment
Prevent Unauthorised Access
Identifies open ports, outdated software and exposed services that could be targeted by attackers attempting to breach your network
Improve Perimeter
Security Helps ensure that firewalls, routers and security appliances are correctly configured and not exposing unnecessary services
Understand Your Attack Surface
Provides a clear view of what systems and services are publicly accessible and how they appear to a potential attacker
What the Assessment Involves
External infrastructure testing is performed remotely without the need for internal access. The tester begins by discovering your organisation’s public facing IP addresses and domains. They then scan for open ports, running services and visible applications to build a picture of your external footprint. Each identified service is then assessed for known vulnerabilities, weak configurations and authentication issues. The test may include attempts to bypass controls, exploit missing patches or enumerate resources that should not be exposed. The testing is designed to avoid disruption and is carried out within an agreed scope. Once complete, you receive a detailed report outlining the findings the level of risk they present and clear recommendations on how to address them.
At a Glance
Asset Discovery
Discovering all public-facing IPs, domains and subdomains.
Port & Service Enumeration
Scanning for open ports and running services across your IP ranges.
Vulnerability Assessment
Assessing each service for known CVEs, weak configurations and default credentials.
Exploitation Attempts
Controlled attempts to confirm whether access can be gained.
Report & Retest
A detailed report covering every finding, risk rating and remediation recommendation.