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Network Penetration Testing

Uncover exploitable vulnerabilities, points of compromise and hidden attack paths across your internal and external networks.

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Network Security Assurance

OnDefend network penetration testing simulates how attackers move inside your environment, escalate privileges, access sensitive systems, and bypass controls. This gives your team validated evidence of risk and clear steps to strengthen resilience across internal and external network layers, as well as supporting compliance requirements for SOC 2, ISO 27001, HIPAA, PCI DSS, NIST, and other regulatory frameworks. 

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Network Environments Tested for Real-World Risk

External Network Penetration Testing

External network penetration testing identifies vulnerabilities, misconfigurations, and exposed services in internet-facing systems. This assessment helps organizations understand their external attack surface and validates the effectiveness of perimeter security controls against real-world cyber threats.

Internal Network Penetration Testing

Internal network penetration testing evaluates vulnerabilities, misconfigurations, and excessive privileges within internal networks after initial compromise. This testing assesses lateral movement risk and confirms that internal network security controls effectively protect critical systems and sensitive data.

Wireless, VPN, and Remote Access Penetration Testing

Wireless, VPN, and remote access penetration testing identifies weaknesses in Wi-Fi security, remote access services, authentication mechanisms, and network segmentation. This testing validates secure remote connectivity and ensures access controls prevent unauthorized entry into the enterprise network.

Active Directory Penetration Testing

Active directory penetration testing assesses domain configurations, authentication of workflows, privilege relationships, and trust boundaries. This testing identifies paths for privilege escalation and lateral movement while validating the security of identity and access management controls across the network.

Standard Pen Testing Only Finds 1/3 of Your Risk.

Our team of OnDefenders identifies vulnerabilities, misconfigurations, and access control weaknesses that increase network attack surfaces and enable real-world compromise. exposure and strengthens your overall security posture, including:

Known Network Vulnerabilities

Known Network Vulnerabilities

Unpatched vulnerabilities in network devices, servers, and services that can be exploited using publicly available techniques or exploits

Network Misconfigurations

Network Misconfigurations

Insecure firewall rules, exposed services, weak protocols, or improper routing configurations that allow unauthorized access or unintended connectivity

Weak Authentication and Access Controls

Weak Authentication and Access Controls

Inadequate authentication mechanisms, shared credentials, or excessive access that enable unauthorized access to network resources

Exposed or Insecure Remote Access Services

Exposed or Insecure Remote Access Services

VPN, RDP, SSH, or other remote access services with weak configurations or protections that attackers can abuse for initial access

Missing or Ineffective Network Segmentation

Missing or Ineffective Network Segmentation

Flat or poorly enforced network segmentation that enables lateral movement between user systems, servers, and critical assets

Insecure Wireless Network Controls

Insecure Wireless Network Controls

Weak Wi-Fi authentication, encryption, or segmentation that allows attackers to gain internal network access via wireless entry points

Privilege Escalation and Lateral Movement Paths

Privilege Escalation and Lateral Movement Paths

Misconfigurations and trust relationships that allow attackers to escalate privileges or move between systems after initial compromise

Monitoring and Detection Gaps

Monitoring and Detection Gaps

Lack of visibility or alerting that allows malicious network activity to persist without detection

Continuous Security Inspector Reveals the Rest

Standard network pen testing and PTaaS miss how real adversaries adapt, how chain identity and network access bypass segmentation and how monitoring controls change over time. OnDefend Continuous Security Inspector (CSI) goes beyond point-in-time testing and reveals the remaining two thirds of network risk.

Emergent Attack Chains and Zero-Day Network Paths

Emergent Attack Chains and Zero-Day Network Paths

Multi-stage attack paths formed by interacting low-risk issues that only surface through continuous adversary simulation

Credential Abuse and Identity-Based Network Attack

Credential Abuse and Identity-Based Network Attack

Theft, reuse, or escalation of credentials that enable persistent network access without triggering alerts

Stealthy Persistence Within Network Infrastructure

Stealthy Persistence Within Network Infrastructure

Hidden backdoors, scheduled tasks, or configuration changes embedded across network systems to maintain long-term access

Covert Command-and-Control Over Network Channels

Covert Command-and-Control Over Network Channels

Encrypted or obfuscated C2 traffic that blends into legitimate network protocols and services

Time-Delayed and Conditional Network Attacks

Time-Delayed and Conditional Network Attacks

Attack paths that activate only under specific conditions, timing, or changes in network state

Trust Abuse Across Network Boundaries

Trust Abuse Across Network Boundaries

Exploitation of implicit trust between network zones, domains, VPNs, partners, or third-party connections

Stealth Data Exfiltration Paths

Stealth Data Exfiltration Paths

Covert data leakage routes designed to bypass network monitoring, logging, and data loss prevention controls

Abuse of Legitimate Network Management Functions

Abuse of Legitimate Network Management Functions

Misuse of administrative tools, protocols, or management interfaces to expand access and avoid detection

Discover OnDefend CSI

Giving You The Competitive Advantage

OnDefend gives you a decisive advantage over adversaries by combining elite offensive operators, deep enterprise network expertise, and intelligence-driven security validation that reflects real-world attacker behavior.

Elite Offensive Operators 

Our testing is led by deeply experienced network offensive security practitioners with advanced certifications in network penetration testing and offensive security. Our team specializes in acting like a persistent adversary to protect your organization from a real one.

Intelligence-Driven Testing 

Testing is guided by a blend of external and proprietary threat intelligence, focusing on the most relevant attacker techniques, emerging threats, and high-impact paths to compromise.

AI- and Automation 
Enhanced Coverage 

AI-driven automation and advanced analytics extend coverage across complex enterprise networks, expanding discovery of exposed services, trust relationships, segmentation failures, and lateral movement paths at scale.

Continuous Testing Capabilities 

Automation and analytics enable ongoing validation as networks evolve, our team is able to gain efficiencies with every assessment. Maintaining visibility into new exposures introduced by infrastructure changes, device additions, or configuration drift.

Executive and Technical Reporting 

Clear reporting delivers prioritized, actionable findings for security teams while translating technical risk into business-level insights, aligning remediation efforts to both operational impact and business risk.

Beyond Compliance Validation 

Testing aligns with NIST 800-115, PTES, and relevant network security guidance while validating real-world exploitability, demonstrating whether network controls actually prevent compromise beyond compliance requirements.

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Our Team
Partners with Yours

Our team partners with yours to gain a deep understanding of your environment and objectives so you receive clear communication, expert guidance, and actionable insight that ensures outcomes align with your security and business goals.

Network Penetration Testing FAQs

What’s the difference between a vulnerability scan and a penetration test?

A vulnerability scan identifies potential weaknesses. A penetration test validates exploitability and demonstrates real attacker impact.

What is the difference between network penetration testing and the OnDefend’s CSI program? 

Network penetration testing is a point-in-time assessment that finds exploitable weaknesses in your internal and external network. 
 
The OnDefend Continuous Security Inspector (CSI) program provides continuous adversarial validation that uncovers hidden risks traditional testing misses, including covert backdoors, insecure configurations, lateral movement paths, and emerging supply-chain exposure. Penetration testing shows current vulnerabilities. OnDefend CSI shows ongoing real-world exposure.  

How often should network penetration testing be performed? 

Most organizations test annually or after major infrastructure changes, deployments, or security incidents. 

Do you test both on premises and cloud hosted networks? 

Yes. We test physical, virtual, hybrid, and cloud connected networks including Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and other third-party cloud providers. 

Will penetration testing disrupt operations?

No. Testing is coordinated with your team and executed safely within defined rules of engagement.

Can you retest to confirm vulnerabilities were fixed?

Yes. Optional retesting verifies that issues have been resolved and that risk is fully addressed. 

Resources

Explore our comprehensive resource collection to enhance your organization’s security posture and stay ahead of potential threats.

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