Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By : Glen D. Singh
Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By: Glen D. Singh

Overview of this book

In the dynamic technology landscape, staying on top of the latest technology trends is a must, especially if you want to build a career in network administration. Achieving CCNA 200-301 certification will validate your knowledge of networking concepts, and this book will help you to do just that. This exam guide focuses on the fundamentals to help you gain a high-level understanding of networking, security, IP connectivity, IP services, programmability, and automation. Starting with the functions of various networking components, you’ll discover how they are used to build and improve an enterprise network. You’ll then delve into configuring networking devices using a command-line interface (CLI) to provide network access, services, security, connectivity, and management. The book covers important aspects of network engineering using a variety of hands-on labs and real-world scenarios that will help you gain essential practical skills. As you make progress, this CCNA certification study guide will help you get to grips with the solutions and technologies that you need to implement and administer a broad range of modern networks and IT infrastructures. By the end of this book, you’ll have gained the confidence to pass the Cisco CCNA 200-301 exam on the first attempt and be well-versed in a variety of network administration and security engineering solutions.
Table of Contents (26 chapters)
1
Section 1: Network Fundamentals
6
Section 2: Network Access
9
Section 3: IP Connectivity
12
Section 4: IP Services
15
Section 5: Security Fundamentals
20
Section 6: Automation and Programmability
22
Chapter 16: Mock Exam 1
23
Chapter 17: Mock Exam 2

Working with extended ACLs

Extended ACLs are sometimes the preferred choice as they allow you to filter specific traffic types compared to standard ACLs. Extended ACLs use the following range of numbers:

  • 100 to 199
  • 2000 to 2699

To create a numbered extended ACL on a Cisco IOS router, use the global configuration access-lists command, followed by a number within the range of 100 to 199 or 2000 to 2699 on the device.

Creating a numbered extended ACL

The following is the full syntax used to create a numbered extended ACL:

Router(config)# access-list access-list-number [ deny | permit | remark ] protocol [source source-wildcard] [operator port] [port-number or name] [destination destination-wildcard] [operator port] [port-number or name]

The following is a description of the new syntax used within an extended ACL:

  • protocol: Specifies the protocol type, such as IP, ICMP, TCP, and UDP.
  • operator: Used to compare the source or destination ports....