External Network Penetration Testing

Assess your external nettwrok for security vulnerabilities with a comprehensive security test

External Network Penetration Testing

Our security solution is specifically designed to protect the external assets of any organization. By combining automation with manual network penetration testing, we are able to quickly identify any vulnerabilities that may exist due to improper configuration of operating systems or open network services. These vulnerabilities could potentially be exploited to gain unauthorized access to the network or key servers from the internet. Our testing covers web servers, VPNs, firewalls, routers, mail servers, and a wide range of networking services to ensure the security of your organization.

It is crucial for organizations to understand their vulnerabilities and the ways that hackers may attempt to exploit them. One way to do this is through external network penetration testing, which involves actively evaluating the security of an organization’s internet-accessible perimeter infrastructure. This helps identify potential opportunities for attackers to gain access to sensitive information or compromise business-critical systems.

External networks may include servers, VPN login portals, webmail portals, and any other portals that can be accessed via a web browser. During a pentest, Cyber Legion’s team of experts will use real-world attack methods and tools to try to breach external systems and gain access to sensitive information.

The testing will be carried out without access to detailed network or infrastructure diagrams and without any accounts or additional user information (unless specifically included in the scope of the test). Our testers follow a standard methodology based on the Open Source Security Testing Methodology Manual (OSSTMM). The external network test can be focused on a specific IP range or include broader reconnaissance using open-source intelligence (OSINT).

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Security Testing Methodology – What do we test for?

Types of Pentesting

  • Black Box

No prior access is given during an external network pentest unless explicitly outlined in the scope.

  • White Box

Specific access is given during an external network pentest.

  • Gray Box 

No access is given to start, but some access is given after certain tests are performed.

Further, these details can be included in the scope of the desired pentest with gray box and white box testing:

  • Network diagrams
  • Infrastructure diagrams
  • Accounts (even temporary accounts for pentests)
  • User information

Network Pentesting

As pentesters, we know that any information about the system being tested is valuable. By understanding the software that is running on someone’s web server, we can more effectively find exploits that are specific to that version of the software, rather than trying a variety of exploits and hoping one works.

At Cyber Legion, we offer flexible testing options to meet our customers’ needs. However, if you want maximum impact and a white-box test, here’s what we recommend for preparing the scope:

  • Identify the assets to be tested, such as specific parts of the external network
  • Determine the IP addresses associated with those assets
  • Provide those IP addresses as the scope of the test

It’s important to make sure the provided IP addresses actually belong to the company, and to notify any third-party vendors connected to those assets. To increase the value of external assessments, it can also be helpful to monitor public IPs from which attacks may be launched in order to better identify and respond to future attacks.

We follow frameworks and best practices such as OWASPASVS, or OSSTMM. Typically port scanning activities are performed, followed by the search for web servers. Determining the software and version in use for each service is also helpful in identifying misconfigurations or vulnerabilities.

Security Testing Methodology – What do we test for?

Several testing stages follow that result in an effective test. By using our platform’s cyber intelligence capability together with expert penetration testing knowledge, Informer’s testers identify your true attack surface with depth.

  • Asset discovery – asset mapping is using Informer’s discovery tools and intelligence engine
  • Service identification – identifies live services that are accessible from the internet
  • Vulnerability analysis – each service is analyzed in detail to identify misconfigurations and software vulnerabilities
  • Service exploitation – exploitation will be performed to verify vulnerabilities and gain access to infrastructure
  • Gain additional access & pivoting – successful exploitation will be used to gain further access to connected networks and hosts

Instant Online Reporting

Our security testing and external network penetration testing services are designed to provide a fast and dynamic experience through our CSaaS platform. With our platform, you can immediately start remedying vulnerabilities as soon as our testers find them. We also offer integration with Jira and Service-Now to automate the creation of tickets for your developers to fix issues.

Our summary report provides a non-technical overview of the test results. For each vulnerability discovered, you can access detailed descriptions, evidence of location and affected parameters, screenshots, remedial actions and recommendations, and references for further information.

Each test is stored separately on our platform, allowing you to quickly access detailed findings or create reports in various formats. You can download reports at any time during or after the test.

How can we Help?

At Cyber Legion, we offer a comprehensive security testing service that combines ongoing penetration testing with remediation through our Secure Client Portal. Our team has extensive expertise in application security, mobile apps, API security, IOT, and network pen testing. We aim to improve the security of our clients and provide detailed, understandable reports on any issues that are discovered.

Our testing methodologies are based on recognized security frameworks and are designed to minimize disruption during the testing process. We keep our clients informed as the test progresses and work closely with them to ensure the best possible outcome of all engagements. Protect your assets and enhance your organization’s security posture with the help of Cyber Legion.


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.

 Penetration Testing Service Features


 Unlimited Cyber Legion CSaaS Platform access

 Black, Grey or White Box Testing

 Scheduled Security testing service – Work Request Button whenever you want


 Manual & Automated Security Testing & Risk Validation 


 Business Logic & Technical Vulnerability Testing

 Detailed Exploitation Evidence

 Security Frameworks Checklists OWASP, SANS etc

 OSINT & Threat Intelligence

 Custom Checklists


 Full Support & References for Remediation

 Collaboration & Integration with ticketing, bug trackers etc

 Unlimited Analysis, Tracking & Reporting

 Live Events & Alerting emails 

 Retesting of discovered issues – unlimited

 On-Demand and Custom Offering that Best Suits your Organization’s needs.


External penetration testing (also known as external network penetration testing) is a security assessment of an organisation’s perimeter systems. Your perimeter comprises all those systems which are directly reachable from the internet.

External penetration tests allow you to properly gauge your defenses and determine where it can be successfully hacked. The penetration test highlights cybersecurity exposures, which allows you to correct the issues before hackers can exploit them.

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 

Discover, Analyze, Prioritize, Track, Visualize & Report

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We can help improve your Business

Ensure your Organization Assets are well  protected in front of the Cyber Attacks

Delivery Workflow

Register for Free and get your test done withn 24 to 48 hours

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Sample Report

Here is a sample report of a Security Testing Engagement

See Sample Report PDF

Work Request

Order your security test and Get Your Report

Get Your Test Report

1. Client Onboarding

Access to all of Cyber Legion's services is provided through the Web Secure Client Portal. To create a Free account, you can sign up through the portal, or contact the Cyber Legion team and they will set up an account for you.

2. NDA , Agreements & Digital Signature

The integration of Digital Signature in our Web Client Portal allows us to legally sign all necessary documents and agreements, enabling us to carry out security assessments on targeted systems.

3. Submit Work Request

Our pricing structure is adaptable to meet the needs of all clients. By filling out the Work Request Form, you can select from pre-existing services or request a personalized proposal.

The Cyber Legion team will acknowledge your order, set up a project in your account, and proceed with the testing and delivery.

4. Security Testing & Report

We meet agreed upon SLAs and follow security testing framework checklists. Based on our commitment, our team of engineers will utilize all of our tools, automation, and testing capabilities to achieve the objectives.

Within the agreed upon timeframe, you will receive a report on the security test that was conducted, including the results, recommendations, and references for addressing any identified issues.

5. Retesting & Validation of Remediation

We not only identify potential threats, risks, and vulnerabilities, but also provide detailed recommendations for resolution. To ensure complete remediation, we offer complimentary retesting and a range of ongoing security testing options for continued vulnerability detection and verification.