CCNA - Chapter 14: Layer 2 & Wireless Security
In this video, we cover Chapter 14: Layer 2 & Wireless Security for the CCNA.
You’ll learn how attackers exploit Layer 2 vulnerabilities and how to protect your network using real-world Cisco security features.
🔥 What you’ll learn:
Common Layer 2 attacks (MAC flooding, ARP spoofing, VLAN hopping)
Defense-in-Depth (DiD) explained
Port Security, DHCP Snooping & Dynamic ARP Inspection (DAI)
Wireless security threats (Rogue AP, Evil Twin, DoS)
WPA2 vs WPA3 and authentication methods
This is essential knowledge for CCNA exam prep and real-world networking.
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Timestamps:
00:00 Intro
00:38 Topics covered
00:45 Types of Layer 2 Attacks on a Network
01:26 Network Attacks
02:16 Common Types of Cyber Attacks
02:36 Malware and Ransomware
02:54 DDoS and Service Disruption
03:21 Defense in Depth (DiD)
03:46 Key DiD Security Layers
04:10 Secure Remote Access & Endpoint Protection
04:36 Email Security (ESA)
04:56 Web Security (WSA)
05:19 Layer 2 Threats
05:43 CAM Table Overflow (MAC Flooding)
06:01 VLAN Attacks
06:36 DHCP Attacks
06:57 ARP Attacks (ARP Spoofing / Poisoning)
07:13 Spanning Tree (STP) Attacks
07:34 CDP / LLDP Attacks
08:07 Protecting Against Layer 2 Threats
08:38 Port Security
10:10 DHCP Snooping
10:39 Trusted vs Untrusted Ports
10:52 DHCP Snooping Binding Table
11:13 Configuration Steps
11:54 Dynamic ARP Inspection (DAI)
12:34 Trusted vs Untrusted Ports
12:56 Configuration Steps
13:46 Wireless Network Security
14:13 Authentication Methods
14:37 Wireless Security Standards and Authentication Modes
15:27 Summary