May 2023

Wireless network security

This lesson constitutes Part 3 of 4 of the wireless networking series of lessons for the CCNA. This lesson focuses on wireless network security and explores various methods for securing a wireless network. Part 1, Wireless fundamentals for the CCNA, covered how a single access point (AP) can provide a basic service set (BSS) for […]

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Securing-Wireless-Networks

Cisco wireless architectures and AP modes

This lesson constitutes Part 2 of 4 of the wireless networking series of lessons for the CCNA. In the previous lesson (Part 1), Wireless fundamentals for the CCNA, we learned about how a single access point (AP) can provide a basic service set (BSS) for a cell area, and how multiple APs can be connected

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Cisco-Wireless-Architectures

Wireless fundamentals for the CCNA

This lesson discusses wireless fundamentals for the CCNA. This is Part 1 of 4 of wireless networking study notes for the CCNA. This lesson introduces the architecture and key components of a wireless network and how the network is organized in terms of structure and function to control access to the wireless medium and allow

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Continuous-Frequency-Spectrum

DAI configuration and verification

We continue our studies of the topics in the Security Fundamentals section of the CCNA exam blueprint. This lesson covers dynamic ARP inspection configuration and verification on Cisco switches. Dynamic ARP Inspection (DAI) is covered in exam topic 5.7, which says you must be able to “Configure Layer 2 security features (DHCP snooping, dynamic ARP

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dynamic-ARP-inspection

DHCP snooping configuration and verification

We continue our studies of the topics in the Security Fundamentals section of the CCNA exam blueprint. This lesson covers DHCP snooping configuration and verification on Cisco devices. DHCP snooping is covered in exam topic 5.7, which says you must be able to “Configure Layer 2 security features (DHCP snooping, dynamic ARP inspection, and port

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DHCP-Snooping-ccna

Switch port security configuration and verification

In this lesson we continue our studies of the topics in the Security Fundamentals section of the CCNA exam blueprint. This lesson covers switch port security configuration and verification. Port security is a security feature of Cisco switches that allows you to control what source MAC addresses are allowed to enter a switchport. Port security

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switch-port-security-ccna

CCNA security fundamentals

These CCNA study notes cover a big chunk of the topics listed in Section 5 Security Fundamentals of the CCNA exam blueprint – specifically, subsections 5.1 Define key security concepts (threats, vulnerabilities, exploits, and mitigation techniques), 5.2 Describe security program elements (user awareness, training, and physical access control), 5.4 Describe security password policies elements, such

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MITM-attack

CDP and LLDP configuration and verification

This lesson covers two Layer 2 discovery protocols, CDP (Cisco Discovery Protocol) and LLDP (Link Layer Discovery Protocol). CDP and LLDP configuration and verification are covered in topic 2.3 of the CCNA exam blueprint, which says you must be able to configure and verify Layer 2 discovery protocols CDP and LLDP. First, Layer 2 discovery

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CDP-LLDP-show-commands
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