Network Penetration Testing
Organizational network infrastructures — both internal and external serve as the first line of defense against cyber threats.
A Network Penetration Test provides a comprehensive assessment of the security posture of internal networks, servers, communication components, internet-facing services, and the organization’s external footprint.
The goal is to identify weaknesses, misconfigurations, and critical vulnerabilities that could allow unauthorized access, system compromise, or data leakage.
Uncover Critical Vulnerabilities with a Professional Network Penetration Test
Cyberattacks targeting infrastructure whether originating externally or from within the internal network, can lead to full system compromise, data theft, operational damage, and severe business impact.
A Network Penetration Test is designed to identify these risks before attackers take advantage of them.
At RedEntry, we perform comprehensive internal and external network penetration tests based on leading cybersecurity standards (NIST, PTES, MITRE ATT&CK), tailored precisely to your environment and risk profile.
Our assessments combine automated scanning with deep manual research to uncover complex, advanced vulnerabilities.
Critical vulnerabilities exposed during network penetration testing:
- Internet-exposed and vulnerable services
- Excessive permissions and Active Directory abuse
- Bypassing network defense mechanisms
- Unauthorized access to sensitive resources
- Misconfigured network architectures enabling lateral movement
- Protocol exploitation and code injection
- Unprotected corporate files, documents, and sensitive data
- Weaknesses in mail servers and Anti-Spam / DMARC configurations
What We Offer
We provide your organization with a fully tailored internal and external Network Penetration Testing service that delivers real operational and business value.
RedEntry’s experts perform a full evaluation of your systems, networks, and security configurations, leveraging proven methodologies and extensive hands-on experience.
We operate with a focused approach—providing clear, accurate, and actionable insights without unnecessary noise.
Our reports highlight what matters most and guide you toward measurable improvements.
- Tailored to your technological environment and architecture
- Full coverage of relevant attack scenarios
- Professional reporting aligned with compliance standards (ISO, SOC 2, GDPR, and more)
- Full remediation support, including a Retest and official certification
CTO at WeCom
“The RedEntry team conducted a comprehensive network penetration test for us — and the results exceeded every expectation.
The assessment was thorough, professional, and transparent throughout the entire process.
We received a detailed, practical, and easy-to-understand report that highlighted risks we were not aware of, along with recommendations we could implement immediately.
I highly recommend RedEntry to any organization that wants to ensure its infrastructure is truly secure.”
Benefits of Network
Penetration Testing
Network Penetration Testing delivers significant value—both in cybersecurity resilience and overall organizational strength:
Real-time vulnerability identification
deep analysis and real exploitation techniques
Compliance with standards & regulations
including ISO 27001, SOC 2, GDPR, and privacy regulations
Prevent breaches and data leakage
simulating external and internal attacks
Assessment of defensive maturity and system behavior
Continuous improvement of organizational cybersecurity posture
Reduced business and operational risks
Our Network Penetration Testing
Internal Network Penetration Test
This assessment simulates a scenario where an attacker already has access to the internal network—whether through phishing, identity theft, impersonation, or a malicious insider.
The test includes:
- Full mapping of the organizational network and internal asset scanning
- Attempts to access sensitive systems without authorization
- Evaluation of network hardening policies
- Bypassing endpoint and network security controls
- User permission review and Privilege Escalation attempts
- Deployment of malicious files to test defense responses
- Use of common attack frameworks (Metasploit, Responder, etc.)
- Credential harvesting and authentication hijacking (including Active Directory)
- Lateral Movement between network segments
- Establishing persistent footholds within the network
- Attempts to create external access using Reverse Shell techniques
- Attempts to access critical servers and high-value systems
Goal:
Understand how much damage an internal attacker can cause—and how quickly such activity can be detected and stopped.
External Network Penetration Test
This assessment simulates a real-world cyberattack originating outside the organization, attempting to penetrate internal systems from the internet.
The test includes:
- External Attack Surface Mapping
- Scanning and identifying exposed services (Web interfaces, open ports, VPN endpoints, etc.)
- Vulnerability detection across internet-facing assets
- OSINT collection that may influence risk levels
- Identifying misconfigurations in perimeter and network infrastructure
- Attempted penetration into internal networks from the outside
- Attempts to access critical systems
- Evaluation of email infrastructure security and mail server hardening
Identification of critical weaknesses enabling intrusion or security bypass
Goal:
Reveal real entry points that external attackers can use to compromise the organization.
Tools We Use
Preparation & Scoping
We hold a kickoff meeting with key stakeholders, review the network architecture, and define the test boundaries, scenarios, and objectives.
For internal tests, we receive access to a workstation with standard user privileges.
For external tests, we define IP ranges and internet-facing assets.
Mapping & Information Gathering
We perform comprehensive fingerprinting of network components, servers, protocols, and active services.
We identify potential entry points, weak configurations, excessive permissions, exposed services, and intelligence that may aid an attacker.
This phase combines automated scanning with advanced manual analysis to create a complete attack surface intelligence map.
Controlled Exploitation
We simulate realistic cyberattacks following NIST, PTES, and MITRE ATT&CK methodologies.
This stage may include: Security control bypass, Unauthorized resource access attempts, Privilege escalation, Lateral movement, Credential harvesting and more.
All actions are thoroughly documented for full reproducibility
Findings Report & Remediation Guidance
We convert all findings into a clear, actionable, and business-oriented report.
The report includes: Risk ratings by severity, Technical documentation & screenshots, Remediation recommendations and Prioritization based on business impact.
We also support the remediation process and perform a Retest, including a final certificate.
Why Choose RedEntry
Proven experience delivering hundreds of successful penetration tests for organizations worldwide
Senior ethical hackers with backgrounds in elite cyber units
Full transparency throughout every project
Reports that are clear, actionable, and easy to understand for both executives and technical teams
Tailored pentesting services that fit your systems, size, and regulatory needs
Our deliverables are fully compliant with the strictest industry standards and regulations, including SOC 2, ISO 27001, PCI, and more.
Our Experts
RedEntry’s penetration tests are conducted by cybersecurity professionals with extensive operational experience and training from the world’s leading security organizations.
Our team holds the industry’s most prestigious certifications in information security and offensive security, representing the highest standard of technical expertise in the field.