Book Image

CCNA Security 210-260 Certification Guide

By : Glen D. Singh, Michael Vinod, Vijay Anandh
Book Image

CCNA Security 210-260 Certification Guide

By: Glen D. Singh, Michael Vinod, Vijay Anandh

Overview of this book

With CCNA Security certification, a network professional can demonstrate the skills required to develop security infrastructure, recognize threats and vulnerabilities to networks, and mitigate security threats. The CCNA Security 210-260 Certification Guide will help you grasp the fundamentals of network security and prepare you for the Cisco CCNA Security Certification exam. You’ll begin by getting a grip on the fundamentals of network security and exploring the different tools available. Then, you’ll see how to securely manage your network devices by implementing the AAA framework and configuring different management plane protocols. Next, you’ll learn about security on the data link layer by implementing various security toolkits. You’ll be introduced to various firewall technologies and will understand how to configure a zone-based firewall on a Cisco IOS device. You’ll configure a site-to-site VPN on a Cisco device and get familiar with different types of VPNs and configurations. Finally, you’ll delve into the concepts of IPS and endpoint security to secure your organization’s network infrastructure. By the end of this book, you’ll be ready to take the CCNA Security Exam (210-260).
Table of Contents (19 chapters)

VLAN hopping

This is one of the VLAN-related attacks that can be executed. The objective behind this attack is that the attacker wants to move from the given VLAN to a new VLAN where the intended victim is placed. This can be evoked by using a concept called double-tagging.

Double-tagging

Double-tagging is a method by which the attacker tries to reach a different VLAN using the vulnerabilities in the trunk port configuration.

This is achieved by first making note of the native VLAN configured on the trunk link connected to the switch ports. The attacker creates a trunk port between their PC and the switch by using the DTP negotiation methods. Then the attacker creates a double tag with the intended VLAN as the inside tag,...