Tutorial Playlist

Cyber Security Tutorial: A Step-by-Step Guide


What is Cybersecurity?

Lesson - 1

Cyber Security for Beginners

Lesson - 2

How to Become a Cybersecurity Engineer?

Lesson - 3

What is Ethical Hacking?

Lesson - 4

What is Penetration Testing?: A Step-by-Step Guide

Lesson - 5

What Is SQL Injection: How to Prevent SQL Injection

Lesson - 6

How to Become an Ethical Hacker?

Lesson - 7

What Is a Firewall and Why Is It Vital?

Lesson - 8

The Complete Know-How on the

Lesson - 9

A Definitive Guide to Learn the SHA 256 Algorithm

Lesson - 10

What Is a Ransomware Attack and How Can You Prevent It?

Lesson - 11

A Look at the Top 5 Programming Languages for Hacking

Lesson - 12

The Most Informative Guide on What Is an IP Address?

Lesson - 13

The Best Ethical Hacking + Cybersecurity Books

Lesson - 14

10 Types of Cyber Attacks You Should Be Aware in 2022

Lesson - 15

The Top Computer Hacks of All Time

Lesson - 16

Top 6 Cyber Security Jobs in 2022

Lesson - 17

The Best Guide to The Top Cybersecurity Interview Questions

Lesson - 18

What Is a Brute Force Attack and How to Protect Our Data Against It?

Lesson - 19

The Top 8 Cybersecurity Skills You Must Have

Lesson - 20

Your Guide to Choose the Best Operating System Between Parrot OS vs. Kali Linux

Lesson - 21

All You Need to Know About Parrot Security OS

Lesson - 22

The Best and Easiest Way to Understand What Is a VPN

Lesson - 23

What Is NMap? A Comprehensive Tutorial for Network Mapping

Lesson - 24

What Is Google Dorking? Your Way to Becoming the Best Google Hacker

Lesson - 25

Your Best Guide to a Successful Cyber Security Career Path

Lesson - 26

The Value of Python in Ethical Hacking and a Password Cracking Tutorial

Lesson - 27

The Best Guide to Understand What Is TCP/IP Model?

Lesson - 28

What Are Keyloggers and Its Effect on Our Devices?

Lesson - 29

Best Guide to Understand the Importance of What Is Subnetting

Lesson - 30

Your Guide to What Is 5G and How It Works

Lesson - 31

How to Crack Passwords and Strengthen Your Credentials Against Brute-Force

Lesson - 32

A Look at ‘What Is Metasploitable’, a Hacker’s Playground Based on Ubuntu Virtual Machines

Lesson - 33

One-Stop Guide to Understanding What Is Distance Vector Routing?

Lesson - 34

Best Walkthrough for Understanding the Networking Commands

Lesson - 35

Best Guide to Understanding the Operation of Stop-and-Wait Protocol

Lesson - 36

The Best Guide to Understanding the Working and Importance of Go-Back-N ARQ Protocol

Lesson - 37

What Are Digital Signatures: A Thorough Guide Into Cryptographic Authentication

Lesson - 38

The Best Spotify Data Analysis Project You Need to Know

Lesson - 39

A One-Stop Solution Guide to Understand Data Structure and Algorithm Complexity

Lesson - 40

Your One-Stop Guide ‘On How Does the Internet Work?’

Lesson - 41

An Introduction to Circuit Switching and Packet Switching

Lesson - 42

One-Stop Guide to Understanding What Is Network Topology?

Lesson - 43

A Deep Dive Into Cross-Site Scripting and Its Significance

Lesson - 44

The Best Walkthrough on What Is DHCP and Its Working

Lesson - 45

A Complete Look at What a Proxy Is, Along With the Working of the Proxy Server

Lesson - 46

A Detailed Guide to Understanding What Identity and Access Management Is

Lesson - 47

The Best Guide to Understanding the Working and Effects of Sliding Window Protocol

Lesson - 48

The Best Guide That You’ll Ever Need to Understand Typescript and Express

Lesson - 49

Express REST API

Lesson - 50

All You Need to Know About Express JS Middleware

Lesson - 51

An Absolute Guide to Know Everything on Expressions in C

Lesson - 52

A Definitive Guide on How to Create a Strong Password

Lesson - 53

Ubuntu vs. Debian: A Look at Beginner Friendly Linux Distribution

Lesson - 54

Your One-Stop Guide to Learn Command Prompt Hacks

Lesson - 55

Best Walkthrough to Understand the Difference Between IPv4 and IPv6

Lesson - 56

What Is Kali NetHunter? A Deep Dive Into the Hackbox for Android

Lesson - 57

A Perfect Guide That Explains the Differences Between a Hub and a Switch

Lesson - 58

The Best Guide to Help You Understand What Is Network Security

Lesson - 59

What Is CIDR? And Its Importance in the Networking Domain

Lesson - 60
The Best Walkthrough on What Is DHCP and Its Working

With the advancement of technology, the need to configure network settings manually has almost become nonexistent. Therefore, the configuration of network settings for our devices is the responsibility of multiple network protocols and models. In this tutorial on what is DHCP, you will learn about such a network concept, DHCP (Dynamic Host Configuration Protocol), which is responsible for connecting our system to the internet through the use of an IP address.

What is DHCP?


DHCP (Dynamic Host Configuration Protocol) is a network administration protocol that is responsible for the task of assigning an IP address to your system and network device. The DHCP network model is based on the client-server architecture, where the connection is established when the client device sends a request message to the server device for providing the system with an IP address.

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Mode of Allocation

The allocation method of assigning an address to the network system can be divided into two different ways:


1. Manual Allocation: This mode of allocation, as the name suggests, requires you to manually configure the network settings for your device rather than applying any network concept. This allocation mode is much more time-consuming and is prone to errors because of user intervention. Later in this tutorial on what is DHCP, you will learn more about the steps on connecting our system to the internet.

The manual allocation is done by accessing the network configuration settings of the device and also requires other related configurations such as subnet mask, default gateway, and preferred DNS server.

2. Dynamic Allocation: The dynamic allocation mode involves the client (user device) sending a request message to the server (DHCP host).

After which, the server shares all the required network resources to the client device and configures the device automatically so that the system can access the internet and various network services.

Working Of DHCP

Till this point, in the tutorial on what is DHCP, you will be clear with the concept that DHCP is responsible for automatically configuring the network settings for your devices by connecting to the DHCP server and receiving all the required network information.

Now go ahead, take a look at the steps that are involved during the DHCP connection:


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  • The first step is when the client broadcasts the DHCPDISCOVER message over the network channel to establish a network connection with the DHCP server.

This message indicates that the client device wants to connect to the internet through the DHCP server.


  • The second step is when the DHCP server receives the DHCPDISCOVER message. According to the message, the DHCP server reserves an IP address for the connecting client and other network configuration settings, including subnet-mask default gateway, preferred DNS server, and shares it with the client device through the DHCPOFFER message.


  • In the third step, the client responds to the DHCP server’s DHCPOFFER through a DHCPREQUEST message requesting the offered IP address and relevant network configuration sent by the DHCP server for the system.


  • In the last step, the server acknowledges the DHCPREQUEST broadcast from the client device and sends the DHCPACK packet to the DHCP client, which comprises the required network configuration for the client device.

Next, you will learn about some DHCP settings which are to an extent needed to control the IP address assignment, reservation requirement, and others.

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DHCP Settings


  • Scope: This attribute refers to the range of addresses available in the address pool of the DHCP server, and then it is assigned to the client device when the server receives the request message from the client system.
  • Lease: The Lease setting of the DHCP server is designed to prevent the hoarding of IP addresses by a single system. 

This is done by assigning an expiration time to the leased IP address so that the DHCP server has some minimum addresses left for other client devices in the network channel.

  • Address Reservation: In this DHCP setting, the client device requests the server to assign the same IP address to the device each time the address allocation takes place. This setting is done by identifying the client device by its MAC address when the IP address is assigned.


In this tutorial on what is DHCP, you learned about the two different ways of allocating network configuration for our device. Then, you also talked about the steps involved in establishing between the client and the DHCP server. Finally, you also saw some attributes related to the DHCP settings in this tutorial on ‘what is DHCP’.

If you want to learn about the topic in detail and its various protocols related to the DHCP, you can refer to Simplilearn’s Cyber Security Expert course. With the completion of your professional course, you will become proficient in network-related tasks, establishing network connections, controlling the flow of network data, and other network-specific skills.

Do you have any questions related to this tutorial on what is DHCP? If yes, feel free to mention them in the comment section at the bottom of this page. Our team will help you solve your queries ASAP.

About the Author

Anmol KapoorAnmol Kapoor

Anmol is a Research Analyst who aims to become a Data Scientist one day. He enjoys Data Management systems and analysis. You will find him reading a book when he is not working.

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