Background:

Nordfrost GmbH & Co. KG—Germany’s leading frozen food logistics provider with 35 locations and approximately 2,500 employees—operates a highly complex IT infrastructure with over 15,000 endpoints and 12,000 network ports. To secure this complex environment, a powerful and centralized solution for network access control was required.

Challenge:

• Need for a real-time overview of the entire corporate network
• Protection against unauthorized access by external and internal endpoints
• Reducing the burden on IT resources through the automation of administrative tasks
• Integration into the existing IT infrastructure with over 450 switches
• User-friendly interface for service desk staff

Solution:

In collaboration with the system integrator LargeNet GmbH, ISL GmbH’s NAC solution, ARP-GUARD, was implemented:

• Centralized management of network security across all locations
• Dynamic VLAN assignment (e.g., for VoIP phones)
• Real-time identification of active, inactive, or unauthorized endpoints
• Custom access rules and automated quarantine functions
• Guest portal without additional software or servers
• Agentless integration, compatible with existing infrastructure

Result:

• Stable and seamless deployment across the entire network
• High transparency and security for the IT team
• Reduced workload for administrators through automated network configurations
• Planned expansion, e.g., through certificate-based authentication
• Positive feedback on support provided by LargeNet and ISL

Conclusion:

With the introduction of ARP-GUARD, Nordfrost has established a future-proof solution for network access control. The investment not only offers high protection against unauthorized devices but also actively supports the company’s digital development.