Internal Network Penetration Testing

Fortify your internal network against cyber threats with our comprehensive security testing

Internal Network Penetration Testing 

In an increasingly interconnected world, securing your organization’s internal network is paramount. Internal Network Penetration Testing is the sentinel at your gates, identifying vulnerabilities before malicious actors can exploit them. At Cyber Legion, we excel in this critical discipline, conducting CREST-approved assessments of your internal network infrastructure.

Your internal network is the backbone of your operations, containing sensitive data and serving as the conduit for critical communications. It’s imperative to ensure its security. Internal Network Penetration Testing is the proactive measure that shields your organization from potential threats and safeguards your core assets.

Our team of experts doesn’t rely solely on theory. We employ real-world attack methods and advanced tools to simulate attacks on your internal network. By uncovering potential weaknesses and vulnerabilities, we provide you with actionable insights to bolster your defenses against cyber threats.

As a CREST Approved provider in EMEA, Cyber Legion not only offers state-of-the-art testing services but also follows a structured process to ensure comprehensive coverage and minimize risks.

Components of Our Internal Penetration Testing

Network Infrastructure Analysis

We examine your network setup, including routers, switches, and firewalls, to identify misconfigurations and weak points

Server and Endpoint Security

Our team assesses the security of critical servers and workstations, evaluating patch management, access controls, and potential vulnerabilities.

Application Assessment

We scrutinize internal applications for common vulnerabilities such as SQL injection, cross-site scripting (XSS), and insecure authentication mechanisms

Wireless Network Evaluation

Our experts test the security of your wireless infrastructure, identifying risks associated with encryption, authentication, and access control

Employee Security Awareness

We evaluate the effectiveness of your organization’s security training programs by simulating phishing attacks and other social engineering techniques

Data Security Practices

Our assessment includes a review of data encryption, retention, and transfer policies to ensure the protection of sensitive information

Compliance and Regulatory Review

We ensure your internal network complies with relevant industry standards and regulatory requirements, providing recommendations for enhancement

Incident Response and Recovery

Our testing includes evaluating your organization’s ability to detect, respond to, and recover from security incidents effectively

Internal Network Security Testing based on Multiple Security Frameworks Methodologies

  • Pre-Assessment Planning

    Define testing scope focusing on vital assets and network segments, collaborate with key organizational stakeholders, and review existing security documentation to establish a foundational understanding of the current security posture

  • Frameworks and Methodologies Alignment

    Leverage diverse frameworks like NIST CSF, ISO/IEC 27001, CIS Critical Security Controls, PCI DSS, and OWASP principles to underpin the assessment, ensuring a comprehensive approach that meets industry standards and regulatory requirements

  • Discovery and Mapping

    Conduct network scanning to pinpoint devices, services, and apps, mapping out the network architecture to identify segmentation, data flows, and potential vulnerabilities or misconfigurations

  • Vulnerability Assessment

    Utilize automated tools to detect known vulnerabilities, prioritizing them based on factors like severity, exploitability, and potential impact on the network

  • Penetration Testing Execution

    Emulate real-world attacker tactics to exploit identified vulnerabilities, focusing on internal threat vectors such as lateral movements and privilege escalations, to uncover the network's susceptibilities

  • Security Control Evaluation

    Critically evaluate existing security measures against the chosen frameworks' best practices, assessing their effectiveness in detecting and responding to incidents

  • Risk Analysis

    Perform a detailed risk assessment to gauge the impact of identified vulnerabilities, utilizing the frameworks to guide the risk management process and ensure thorough analysis

  • Reporting and Remediation Strategy

    Compile findings into a comprehensive report that includes remediation recommendations, offering a prioritized action plan for addressing vulnerabilities and enhancing security measures aligned with best practices

  • Post-Assessment Activities

    Assist in the remediation process, suggest re-testing to confirm the effectiveness of corrective actions, and recommend enhancements to continuous monitoring solutions and security policies.

  • Continuous Improvement and Monitoring

    Advocate for ongoing security improvements and the adoption of continuous monitoring tools to keep pace with evolving threats and maintain a resilient security posture

Benefits of Working with Cyber Legion

Our Commitment to Your Security

Cyber Legion is your trusted partner in enhancing and protecting your organization’s digital integrity. With our comprehensive security services, including penetration testing and remediation across applications, mobile apps, APIs, IoT devices, and networks, we’re dedicated to fortifying your defenses against cyber threats

Proactive Defense Across All Fronts

Our Secure Client Portal opens the door to an array of specialized security testing services. By adopting best practices and reputable security frameworks, we minimize operational disruption and provide insightful feedback throughout the testing process. Stay informed and secure with our targeted approach to application, mobile, API, IoT, and network security.

Navigating Cybersecurity Challenges Together

At Cyber Legion, we believe in a partnership approach to cybersecurity. Our experienced team is committed to offering expert support and guidance, ensuring your needs are met with precision and professionalism. Whether you require a one-time assessment or ongoing services, we’re here to assist you in navigating the complex landscape of cybersecurity

Securing Your Business Continuity

Trust Cyber Legion to keep you one step ahead of cybersecurity threats. Our clear, comprehensive reporting identifies vulnerabilities and outlines actionable steps for improvement, empowering your organization to achieve and maintain the highest levels of security. Let us be your guide in the ever-evolving world of cybersecurity, safeguarding your organization’s future


Penetration tests, also known as pen tests, are conducted by ethical hackers in order to identify vulnerabilities in your company’s software and hardware systems. A web application pen test is a specific type of test that focuses on examining the endpoint of every web application in order to uncover potential weaknesses. These tests are becoming increasingly important as hackers are targeting web apps, browsers, and plug-ins that may contain sensitive financial or personal information. By conducting a pen test, you can ensure that your systems are secure and protect your company’s data from potential threats.

With Cyber Legion services you can achieve all your security goals in one platform. Penetration Testing and Vulnerability Management combined in one unified view. Live events for all penetration testing findings and vulnerability management results with bug tracking, Risk dashboards, Ticketing systems etc.


Internal Network Penetration Testing Service FeaturesSupported
Comprehensive Internal Vulnerability Scanning
Insider Threat Simulation
Employee Phishing Awareness and Testing
Wireless Network Security Assessment
Physical Security Evaluation
Segmentation and Access Control Testing
Active Directory Security Assessment
Application Layer Testing
Database Security Evaluation
Privilege Escalation Testing
Internal Penetration Testing Based on MITRE ATT&CK® Framework
Security Policy and Compliance Review
Network Device Configuration Review
Incident Response Plan Testing
Collaboration with IT Security Teams for Remediation Planning
Checks against Baseline Security Requirements for Internal Networks

An internal network penetration test is a type of security assessment that simulates a real-world attack on an organization’s internal network infrastructure to identify vulnerabilities and weaknesses that could be exploited by malicious actors. The objective of this type of testing is to evaluate the effectiveness of an organization’s security controls and identify potential security gaps that could result in unauthorized access to sensitive data or network resources.

During an internal network penetration test, security professionals use a range of techniques and tools to identify vulnerabilities in network devices, servers, workstations, wireless networks, and applications that run on the internal network. The testing typically follows a predefined methodology that includes reconnaissance, vulnerability scanning, exploitation, post-exploitation, and reporting.

The results of an internal network penetration test provide organizations with valuable information about the effectiveness of their security measures and enable them to take proactive steps to remediate identified vulnerabilities before they can be exploited by attackers. By identifying and addressing security weaknesses, organizations can improve the overall security posture of their internal network infrastructure and reduce the risk of a security breach.

Internal network penetration testing is important for several reasons:

  1. Identifying vulnerabilities: Internal network penetration testing helps identify vulnerabilities and weaknesses in an organization’s internal network infrastructure. These vulnerabilities could be exploited by malicious actors to gain unauthorized access to sensitive data or network resources.

  2. Improving security posture: By identifying weaknesses and vulnerabilities, organizations can take steps to improve their security posture and reduce the risk of a security breach. This can help prevent financial loss, reputational damage, and legal repercussions.

  3. Compliance: Many regulatory standards, such as PCI DSS and HIPAA, require organizations to conduct regular security assessments, including internal network penetration testing, to ensure compliance with industry regulations.

  4. Demonstrating commitment to security: Conducting internal network penetration testing demonstrates an organization’s commitment to security and their willingness to take proactive steps to identify and address potential security risks.

  5. Mitigating insider threats: Internal network penetration testing can help identify potential insider threats by identifying vulnerabilities that could be exploited by insiders. This can help prevent data breaches and other security incidents caused by employees or contractors with malicious intent.

In summary, internal network penetration testing is important for identifying vulnerabilities, improving security posture, compliance, demonstrating commitment to security, and mitigating insider threats. By conducting regular internal network penetration testing, organizations can proactively identify and address potential security risks, reducing the risk of a security breach and protecting their sensitive data and network resources.

The Penetration Testing Framework (PTF) provides comprehensive hands-on penetration testing guide. It also lists usages of the security testing tools in each testing category. The major area of penetration testing includes: Network Footprinting (Reconnaissance) Discovery & Probing.

Our testers will contact you immediately by phone, email, and the dedicated Slack channel that we will use with you during the testing process.

This isn’t something we actively test for and we wouldn’t recommend testing for this. However, we will highlight vulnerabilities that could lead to a Denial of Service.

The network penetration testing process typically consists of five phases:

  1. Planning and Reconnaissance. The goal of this phase is to plan to simulate an attack. Understanding your company’s tech stack and systems is key.
  2. This refers to the investigation stage, where penetration testers use scanning tools, explore your systems and identify vulnerabilities of the network.
  3. Gaining Access. Having identified network vulnerabilities, the penetration testers use these security vulnerabilities to gain access to your business network. The pen testers then use these vulnerabilities to exploit your system.
  4. Persistent Access. After successfully gaining access to your system, the pen tester will maintain access long enough to accomplish the typical malicious hackers’ goals.
  5. Security Assessment Report. After the Network Penetration test, a report is prepared discussing the process itself together with the analysis. The report will outline the security vulnerabilities found and how to prevent future attacks.

The time that penetration testing takes depends on the size and complexity of your organization’s system structure, as well as the scope of the test itself. For the ‘average’ company, a network penetration test should take around three days. For a merchant processing millions of credit cards a year, for example, a pen test will take over a week, or possibly two.

It’s crucial to find out how vulnerable your network is before an attack happens. You can use the information collected to fix potential security flaws and keep your data safe from hackers.

The penetration testing cost depends on the facts identified during scoping, such as the agreed time, goals, technical resources, approach, and remedial support.

Security Testing Pricing list refence 

CREST Approved Penetration Testing Services

Secure your business with top-tier expert knowledge and advanced Penetration Testing (CREST Approved)

Let's collaborate to build and maintain secure businesses

Cyber Legion convert threats into trust by leveraging Advanced Technology and Expertise in Product Security and Business Continuity. Our approach integrates Secure by Design, comprehensive Security Assurance, Red Teaming, Adversary Emulation and Threat Intelligence, Penetration Testing, and Expert Security Advisory and Consultancy. We ensure compliance with meticulous security assurance and detailed documentation, from design to post-market.

As a CREST-certified Penetration Testing provider in the EMEA region, we are committed to the highest security standards.Cyber Legion - CREST Approved