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Guide to Security for Linux Systems

person icon Imran Afzal

4.6

Guide to Security for Linux Systems

In this online course about cyber security, learn about the protocols and breaches involved in Linux security.

updated on icon Updated on Jun, 2025

language icon Language - English

person icon Imran Afzal

English [CC]

category icon IT and Software ,Operating Systems and Servers,Linux

Lectures -27

Resources -1

Quizzes -2

Duration -3 hours

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4.6

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Course Description

Are you an IT professional in the corporate environment enthusiastic about becoming an expert at Linux Security? This free online cybersecurity certification will introduce you to the principles and steps you will need to ensure that your system is secure from any potential harm. Gain insight into the fact that although Linux is an open-source operating system whose code is easily read by users, it is regarded as more secure when compared to other operating systems. You will implement an internal security protocol and an external protocol if your machine is serving outside services such as HTTP and FTP. In a corporate environment, you will likely be working with different servers, databases, and applications, and as a result, you will find out how crucial it is to learn how to secure all the operating systems in this type of tiered environment. Discover that the key priority in Linux security is the protection of data, system resources, and application workflows.

At first, the course will introduce you to the different ways the security of your Linux machine can be breached, which will help you take the appropriate steps to protect your system. You will learn the command that is used to set the parameters around the password without making changes to the user account, along with the minimum number of days required between password changes and the maximum number of days the password is valid. These steps will go a long way in ensuring that you reduce the vulnerability of your system. What is the value of setting up a password policy in a corporate environment? This cybersecurity training will clarify this common question and show you how to use any of the three main files to set the password policy. You will be able to include essential best practices in your password policy, such as preventing users from reusing old passwords and setting the minimum password length. Next, you will learn how to disable Secure Shell (SSH) access for a specific user and disable root login on your machine, after which the process of monitoring the number of users who have not been logged into the system for a long time and how to manually lock or disable those accounts is discussed. Disabling inactive accounts ensures that accounts that may not have been responsibly removed are not available to attackers, and the section sets up learning about another layer of security, which involves setting the file ownership rights and permissions that users and groups in your Linux system can have. Finally, you will study the process of changing file ownership rights, the “message of the day,” “one service per server,” and user account creation. 

Cybersecurity is a booming market given our reliance on data in the modern world. Network security is of utmost importance because of the value that data and especially user- and BigData has, so this security certification is perfect for those professionals in system administration, Linux security or IT infrastructure.

Goals

  • Explain the function of Oracle VirtualBox
  • Recall the different system tabs in Linux CentOS 8
  • Discuss the process of creating a virtual machine
  • Analyze the role of the anaconda installation program in CentOS
  • Outline the elements that make Linux Security essential
  • Describe the different types of security breaches
  • List examples of operating system breaches
  • Define the concept of Linux file ownership and permissions
  • Identify the examples of services in Linux

Prerequisites

  • No Prerequisites
Guide to Security for Linux Systems

Curriculum

Check out the detailed breakdown of what’s inside the course

Introduction

3 Lectures
  • play icon 1-complete-guide-to-linux-secuirty-intro 01:30 01:30
  • play icon 2-linux-security-course-overview 04:27 04:27
  • play icon Course-syllabus

Lab-Setup

5 Lectures
Tutorialspoint

3- Linux Security

19 Lectures
Tutorialspoint

Instructor Details

Imran Afzal

Imran Afzal

Imran Afzal, CEO of UTCLI Solutions and best-selling instructor is renowned for his expertise in IT and education. With a global reach, he has successfully instructed over a million students and excels as an educational content creator, mentor, and entrepreneur, holding an MBA degree.

Boasting over two decades of experience in systems administration, engineering, leadership, entrepreneurship, training, and public speaking, Imran's career began at Time Warner in New York City in 2001 as a systems administrator, marking the start of his journey in IT.

He has applied his IT acumen across various Fortune 500 companies in sectors such as finance, fashion, and tech media. Notable projects led by Imran include data center migrations, VMWare deployment, monitoring tools implementation, and Amazon cloud migration.

Imran is an alumnus of Baruch College, City University of New York, where he graduated with honors in Computer Information Systems. He furthered his education by obtaining a Master of Business Administration (MBA) from the New York Institute of Technology (NYIT).

His professional qualifications encompass certifications in Linux Systems Management, UNIX Operating Systems, Linux System Administration, System Internals, VMWare Certified Professional, RHCSA, and Windows Server Certification.

Since 2010, Imran has dedicated himself to training, offering both onsite and online courses. His online courses are among the best-selling and highest-rated, with a student base exceeding one million worldwide. He has been instrumental in aiding over a thousand students in securing their dream IT jobs.

Committed to the cause of education and community service, Imran has also founded a non-profit school catering to children from pre-K to 10th grade

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