Networking Fundamentals

Networking Fundamentals

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1. Introduction to Networking

Learn about the history and evolution of networking technologies and how modern communication systems rely on networks. This section provides a comprehensive overview of how devices communicate and share resources efficiently across different types of networks.

What is Networking?

Types of Networks

Understanding Network Topologies

Networking Hardware

2. IP Addressing and Subnetting

Discover the fundamental role of IP addressing in identifying devices on a network and how subnetting helps optimize network efficiency. This section covers the basics of IP addressing, introduces subnetting techniques to segment networks, and explores how these concepts contribute to smooth communication across connected devices.

Introduction to IP Address

Understanding Subnetting

Practical Subnetting Exercises

Network Address Translation (NAT)

3. Network Protocols and Standards

Explore the foundational rules and protocols that govern how data is transmitted and received over networks. This section delves into essential networking models, such as the OSI Model and the TCP/IP Model, while covering widely-used protocols like HTTP, FTP, and DNS. Understanding these protocols ensures that devices communicate effectively, regardless of their underlying technologies, creating seamless interactions between global networks.

OSI Model Review

Common Network Protocols

Wireless Networking Standards

4. Network Security

Learn how to protect networks from cyber threats by implementing essential security measures. Explore firewalls, intrusion detection systems, and encryption techniques to safeguard data. This section also covers securing both wired and wireless networks, helping you maintain robust network security in various environments.

Introduction to Network Security

Firewall and Intrusion Detection Systems (IDS)

Encryption and VPNs

Securing Wireless Networks

5. Network Troubleshooting and Management

Discover the essential tools and techniques used to diagnose and resolve network issues. Learn how to identify and address common network problems, monitor performance, and ensure networks are running optimally. This section will also cover best practices for maintaining a network and keeping it secure.

Network Troubleshooting Tools

Diagnosing Network Problems

Monitoring Network Performance

Maintaining a Network

Conteúdo do Curso

Networking Fundamentals

Networking Fundamentals

1. Introduction to Networking

What is Networking?Types of Networks Understanding Network Topologies Networking Hardware

2. IP Addressing and Subnetting

Introduction to IP Address Understanding Subnetting Practical Subnetting Exercises Network Address Translation (NAT)

3. Network Protocols and Standards

OSI Model Review TCP/IP Model Common Network Protocols Wireless Networking Standards

4. Network Security

Introduction to Network Security Firewall and Intrusion Detection Systems (IDS)Encryption and VPNs Securing Wireless Networks

5. Network Troubleshooting and Management

Network Troubleshooting Tools Diagnosing Network Problems Monitoring Network Performance Maintaining a Network Overview

Practical Subnetting Exercises

Identify the IP Address and Required Subnet Mask

Start with the IP address: Begin with the IP address you want to divide, such as 192.168.1.0.

Determine the number of subnets: If you need 4 subnets, decide on the appropriate subnet mask to accommodate them.

Calculate the Number of Subnets

Formula: Use the formula 2^n - 2 where n is the number of bits borrowed from the host portion of the address to determine the number of subnets. For instance, borrowing 2 bits results in 4 subnets.

Determine Subnet Ranges

Assign subnet ranges: Using the subnet mask, assign subnet ranges. If your original subnet mask is 255.255.255.0 and you need to create 4 subnets, your new subnet mask would be 255.255.255.192.

Example ranges:

192.168.1.0 – 192.168.1.63 (Subnet 1)
192.168.1.64 – 192.168.1.127 (Subnet 2)
192.168.1.128 – 192.168.1.191 (Subnet 3)
192.168.1.192 – 192.168.1.255 (Subnet 4)

Configure Devices

Assign IP addresses: For example, devices in the HR department could use addresses from 192.168.1.10 – 192.168.1.30 under Subnet 1 to ensure they are logically grouped.

Testing and Verification

Connectivity tests: After configuration, test connectivity to ensure devices within the same subnet can communicate, and verify isolation between subnets if required.

Document Your Subnets

Documentation: Always document the subnet ranges, IP addresses, and configuration settings for future reference and troubleshooting.

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Seção 2. Capítulo 3

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