Threats, AAA, awareness and physical control, ACLs, port security, VPNs, wireless.
The defensive side of networking. Understand the common threat categories, configure AAA and 802.1X, build the human and physical half of a security program (awareness, locked closets, password policy, MFA, certificates), write standard and extended ACLs without breaking your network, and recognize the moving parts of a site-to-site IPsec VPN.
Welcome to module 6. Threats, AAA, awareness and physical control, ACLs, port security, VPNs, wireless. I'll meet you again at the top of every chapter — this module's course coverage is 16%, so don't rush it. Pick chapter 6.1 below to start.
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Vocabulary for the security domain — threat, vulnerability, exploit, attack vector — followed by AAA (Authentication, Authorization, Accounting) and how 802.1X enforces port-based authentication on access switches.
Every control in this module assumes the attacker has to break something technical. Most intrusions don't bother — they ask a person, or they walk up to the console port. This chapter covers the human and physical half of security: awareness training, physical access control, modern password policy, multi-factor authentication, certificates, and biometrics.
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