Description

Linux Security Hardening & Auditing: Practical Course. This course examines structured security, Linux OS hardening, and server security auditing using practical tools. The Linux Security Hardening & Auditing course teaches students how to assess their Linux servers and configure them systematically and securely. The course begins with basic topics such as replacing passwords with private keys in SSH, setting up network packet filters, and configuring automatic security updates. It then explores more advanced concepts that are often overlooked, such as PAM modules, kernel settings, file integrity checks, and system event logging. All of these steps are demonstrated on real systems and in live execution so that students can understand the reasons and how to execute commands in a practical way. In this course, the use of the Lynis security tool is taught as the main focus of security auditing. Learners learn how to run security tests on Linux systems, analyze the tool’s findings, and separate security warnings from remediation suggestions. The tool uses a resilience index as a measure of security before and after changes are made. Topics related to securing authentication, configuring password policies, adjusting Linux kernel parameters via sysctl to protect memory and network, using auditd and sysstat for system traceability, checking file integrity with AIDE, disabling unnecessary services, and password-protecting the bootloader are also covered in detail so that students can measurably improve the security of their servers.

What you will learn

• Systematic hardening of Linux servers: Securing Debian and Ubuntu servers from SSH access to kernel settings.
• Secure SSH access: Use a key to log in instead of a password, change the port, keep-alive settings, and important security options.
• Setting up packet filtering with ufw: Configuring the firewall and understanding the rules written into the Linux kernel.
• Configure automatic updates: Set up unattended-upgrades to receive security reports via email.
• Installing and using the Lynis tool: performing security audits and using the resilience index as a measurement criterion.
• Analyzing and prioritizing Lynis findings: Separating warnings from suggestions and ranking them based on effort and impact.
• Authentication hardening: Set password policies, PAM modules, and remove unnecessary user accounts.
• Setting kernel parameters with sysctl: securing network packets, protecting memory, and evaluating what Lynis checks for.
• Creating event logging and tracking capabilities: using auditd, sysstat, and process auditing tools.
• Checking the integrity of files and bootloader: Checking files with the AIDE tool, turning off additional services, and encrypting the bootloader.

This course is suitable for people who:

• System administrators and DevOps engineers: People who want to secure their Linux servers in a structured way.
• IT professionals: Those who want to perform audit assessments and implement security findings on servers.

Linux Security Hardening & Auditing: Practical Course Details

• Publisher:  Udemy
• Instructor:  Devops Learning , Devops Lernen
• Training level: Beginner to advanced
• Training duration: 3 hours and 13 minutes
• Number of lessons: 27

Course topics

Prerequisites for the Linux Security Hardening & Auditing: Practical Course

• NO prior knowledge of security required.
• Basic Linux administration skills are helpful (terminal, package management).
• A Debian or Ubuntu test machine to follow the steps yourself.

Course images

Sample course video

Download link

Download Part 1 – 1 GB

Download Part 2 – 682 MB

Rapidgator link

Download Part 1 – 1 GB

Download Part 2 – 682 MB

File(s) password: www.downloadly.ir

File size

1.6 GB