Uncover hidden vulnerabilities inside your local area network — before an insider threat or lateral-moving attacker does.
Local Area Network (LAN) security testing is a comprehensive assessment of your internal network infrastructure — evaluating the security of switches, routers, wireless access points, VLAN configurations, network protocols, and connected devices. While most organizations focus on perimeter security, the internal network is often where attackers cause the most damage after gaining initial access.
Modern threats including ransomware, insider attacks, and supply chain compromises all rely on the ability to move laterally through internal networks. LAN testing identifies the pathways attackers use — misconfigured switches, weak VLAN segmentation, unencrypted protocols, rogue devices, and excessive trust relationships — before they can be exploited.
of network breaches involve lateral movement through internal networks after initial compromise
of data breaches involve internal actors — employees, contractors, or compromised insider accounts
average time to detect a breach — attackers spend months moving through internal networks undetected
End-to-end assessment of your internal network — from physical layer security to application-level trust relationships and Active Directory configurations.
Comprehensive review of your network architecture, switch configurations, router security, and network topology — identifying design flaws, misconfigurations, and unnecessary network exposure that create attack pathways.
Validation of VLAN configurations and inter-VLAN routing controls — testing for VLAN hopping attacks, misconfigured trunk ports, and inadequate segmentation between sensitive network zones such as PCI, HIPAA, and guest networks.
Security assessment of all wireless networks including corporate Wi-Fi, guest networks, and IoT wireless segments — testing encryption strength, authentication mechanisms, rogue access point detection, and wireless client isolation.
Evaluation of your network access control policies — testing whether unauthorized devices can connect to your network, bypass 802.1X authentication, or gain access to sensitive network segments without proper credentials.
Assessment of network protocols in use across your LAN — identifying insecure protocols (Telnet, FTP, SNMPv1/v2, HTTP), protocol-level attacks (ARP spoofing, DNS poisoning, DHCP starvation), and weak cryptographic configurations.
Deep assessment of Active Directory security — including Kerberoasting, AS-REP roasting, Pass-the-Hash, Pass-the-Ticket, DCSync attacks, and misconfigured Group Policy Objects that allow privilege escalation within the domain.
Evaluation of your network monitoring, IDS/IPS, and SIEM capabilities — testing whether your detection tools identify and alert on common attack techniques, lateral movement, and data exfiltration attempts within the LAN.
Security assessment of IoT devices, printers, IP cameras, building management systems, and OT equipment connected to your LAN — identifying default credentials, unpatched firmware, and inadequate network isolation of these high-risk devices.
Our LAN security testing follows a systematic, layered approach — from passive discovery to active exploitation — ensuring complete coverage of your internal network attack surface.
Passive and active discovery of all devices connected to your LAN — building a complete asset inventory including IP addresses, MAC addresses, operating systems, open ports, and running services across all network segments.
Reconstruction of your network topology — identifying switches, routers, firewalls, VLANs, and network zones to understand the logical and physical structure of your LAN and identify potential attack paths.
Comprehensive vulnerability scanning of all discovered assets — identifying unpatched systems, weak configurations, default credentials, and known CVEs across all devices and services on the internal network.
Manual analysis of network protocols, switch configurations, routing tables, and access control lists — identifying protocol-level weaknesses, misconfigurations, and insecure design patterns that automated tools miss.
Controlled exploitation of identified vulnerabilities to demonstrate real-world impact — simulating how an attacker would move laterally through your network, escalate privileges, and reach sensitive systems and data.
Dedicated wireless security testing — scanning for rogue access points, testing encryption and authentication, attempting deauthentication attacks, and validating wireless client isolation and guest network separation.
Comprehensive Active Directory security review — enumerating users, groups, GPOs, and trust relationships, then testing for common AD attack techniques including Kerberoasting, DCSync, and privilege escalation paths.
Comprehensive report with network topology diagrams, risk-rated findings, attack path visualizations, and a prioritized remediation roadmap — giving your team a clear plan to harden your internal network.
Our LAN testing covers the full spectrum of internal network attack techniques used by real-world threat actors.
Intercepting network traffic between devices by poisoning ARP caches — enabling credential theft, session hijacking, and traffic manipulation on the local network segment.
Exploiting misconfigured trunk ports or switch spoofing to gain access to VLANs that should be isolated — bypassing network segmentation controls designed to protect sensitive data.
Requesting Kerberos service tickets for service accounts and cracking them offline — a common Active Directory attack that can yield high-privilege credentials without triggering alerts.
Responding to broadcast name resolution requests to capture NTLMv2 credential hashes — one of the most common and effective internal network attacks, often enabled by default Windows configurations.
Using captured NTLM hashes or Kerberos tickets to authenticate as other users without knowing their plaintext passwords — enabling lateral movement across the network without cracking credentials.
Setting up a rogue wireless access point that mimics your corporate SSID — tricking devices into connecting to the attacker-controlled network and exposing credentials and traffic.
Internal network security is the foundation of your entire cybersecurity posture. Even the strongest perimeter defenses can be bypassed — and once an attacker is inside your LAN, the damage they can cause depends entirely on how well your internal network is segmented, monitored, and hardened.
Our LAN testing findings directly inform your Business Continuity and Disaster Recovery planning — identifying which internal systems are most at risk, what the blast radius of a successful internal attack would be, and how to design your network to minimize the impact of a breach on your critical business operations.
LAN testing is most effective as part of a comprehensive security assessment program. Explore our related services.
Full-scope penetration testing covering external networks, web applications, social engineering, and red team exercises — providing a complete picture of your security posture.
Web Application Firewall testing to validate rule effectiveness, identify bypass techniques, and optimize your WAF configuration for maximum protection with minimal false positives.
Disaster recovery planning for IT infrastructure and cybersecurity — ensuring your organization can recover quickly from network breaches, ransomware, and other cyber incidents.
Our LAN security testing team will map every attack path inside your network and give you a clear remediation plan to close them.