Network Security Essentials

Module Overview

Covers foundational network security principles relevant to modern enterprise environments. Introduces threat categories, security protocols, and defensive techniques aligned with CCNA Security and SPPU curricula.

Topics Covered

• Security threats: malware, phishing, DoS/DDoS, man-in-the-middle attacks
• Cryptography basics: symmetric vs asymmetric encryption, hashing
• Firewalls: packet filtering, stateful inspection, application-layer
• VPN technologies: IPsec, SSL/TLS, site-to-site vs remote access
• AAA framework: RADIUS, TACACS+
• Cisco ASA: basic configuration and access policies

Learning Outcomes

Students will be able to identify common attack vectors, configure basic firewall rules on Cisco equipment, and implement VPN tunnels for secure remote access.