Basics of Security Hardening of Networking Devices

This course introduces the fundamental concepts of network switching, routing, and security at Layers 2 and 3. Participants will learn how switching operates within network infrastructure and explore its security implications. Through hands-on practice, they will configure VLANs, trunk links, and inter-switch connections, apply port security, and implement Spanning Tree Protocol to maintain network stability. The course also covers essential hardening techniques, such as securing management interfaces, isolating unused ports and VLANs, and enabling SSH for secure remote access with password encryption. On the routing side, learners will configure static and dynamic routing protocols and apply standard and extended Access Control Lists (ACLs) to control traffic and enhance security.

This training is part of the activities of the CADMUS Project, funded through the Digital Europe Programme, which aims to address the critical shortage of cybersecurity professionals across EU.

Who Can Apply?

This training is intended for SMEs, public and education sector.

Prerequisites: Basic understanding of TCP/IP networking concepts. Familiarity with network devices (switches, routers, firewalls) is desirable but not required.

Why Participate?

Upon successful completion of the training, participants will be able to:

• Explain the role of network switching in infrastructure and assess its security implications.
• Configure VLANs, trunk links, and inter-switch connections following secure design principles.
• Apply port security mechanisms to restrict unauthorized access.
• Implement and verify Spanning Tree Protocol for loop prevention and network stability.
• Harden management interfaces and isolate unused ports and VLANs to reduce attack surfaces.
• Configure SSH for secure remote device management.
• Enable password encryption to protect credentials in device configurations.
• Configure static and dynamic routing protocols to ensure efficient Layer 3 connectivity.
• Apply standard and extended Access Control Lists (ACLs) to filter and control network traffic

How to Apply?

Participation is free of charge.

Course Availability: 15^th – 25^th Nov 2026

Duration: 12 hours, self-paced learning

To participate, please express your interest by registering via CADMUS Cybersecurity Training Ecosystem for training Basics of Security Hardening of Networking Devices (CADMUS CR-01) using the code ABU2026hr#

Certificate

Participants will receive a Certificate of Participation and, depending on their performance, a Certificate of Successful Completion.