Overview What You Will Learn Curriculum Instructor

Course Overview

The course will help to equip you with the essential skills to secure Linux systems. Through a hands-on approach, the course covers fundamental Linux security concepts and techniques, providing practical guidance on protecting your systems from potential threats. Whether you are a system administrator or an IT professional, this course offers valuable insights into strengthening your Linux environment.

This course begins with helpful tips and tricks to streamline your Linux security efforts. It then moves into securing the GRUB bootloader with password protection and ensuring that your system is always up to date with security patches. User management is covered extensively, focusing on PAM configurations to enforce strong password policies, manage sudo access, and restrict root logins. You’ll also learn to control remote SSH connections by managing SSH keys, disabling root access, and blacklisting users. The course further delves into firewall configuration using iptables, setting up intrusion prevention with Fail2ban, and using TCP Wrappers for access control. Finally, it explores auditing and virus scanning tools like Lynis and ClamAV to ensure a secure system. 

By the end of the course, you will have the knowledge to implement robust security measures, protect Linux systems, and manage vulnerabilities effectively. 

What You Will Learn

  • Secure your Linux server by following the hardening tips shown throughout the videos.
  • Learn how to reduce the number of vulnerabilities of your server and decrease the chances to have it compromised by hackers.
  • Control remote SSH connections by managing SSH keys
  • disabling root access
  • and blacklisting users.

Program Curriculum

Tips & Tricks

  • Protect GRUB with Password
  • Security Patching
  • Chapter 2 Quiz

  • What is PAM?
  • Check if a Service Uses PAM
  • Common-auth File Explained
  • Restrict Users from using Old Passwords
  • Set Password Expiration for Users
  • Enforce Strong Passwords
  • Sudo Access
  • Disable Root Login
  • /etc/securetty File
  • Limit Scheduling Jobs with cron
  • Chapter 3 Quiz

  • SSH Banner Before and After Login
  • SSH Keys
  • Server's Fingerprint
  • Disable Root Connection
  • Blacklist Users from ssh
  • Chapter 4 Quiz

  • Iptables
  • iptables-persistent
  • Fail2ban
  • fail2ban-client Command
  • TCP Wrappers
  • Chapter 5 Quiz

  • Lynis Audit Tool
  • Virus Scanning - ClamAv
  • Chapter 6 Quiz
Load more modules

Instructor

Carmen Balan and Gabriel Avramescu

Carmen -Carmen Balan is a skilled Linux System Administrator with over four years of experience, holding an M.Sc.Eng. in Computer Science. She is certified in several key areas of her field, including LPIC-1: System Administrator, LPIC-2: Linux Engineer, ITILv3 Foundation Level, and AWS Solution Architect Associate. Carmen is passionate about Linux and is eager to share her extensive knowledge and expertise with others.Gabriel - Gabriel Avramescu is a highly experienced Senior Information Security Consultant specializing in ethical hacking and penetration testing. He works to identify and exploit vulnerabilities in data centers, applications, and network infrastructures, emulating adversarial tactics to assess security defenses. His expertise covers black box and white box testing, manual and automated code reviews, and the use of advanced testing tools for vulnerability assessments. Gabriel provides detailed reports and recommendations to help organizations strengthen their security postures. He is also proficient in analyzing web applications, web services, operating systems, and security architectures to uncover weaknesses and assist in developing remediation strategies.In addition to his consulting role, Gabriel is an accomplished IT trainer, offering courses in CEH, ECSA, CHFI, ECIH, and ICS-SCADA Cybersecurity from EC-Council, as well as Cisco CCNA and Linux Essentials. His extensive certifications include OSWE, CREST Registered Penetration Tester, OSCE, OSWP, OSCP, CHFI, ISO 27001 Lead Auditor, ECSA, CEH, CCNA, and CCNP, along with expertise in VMware and Microsoft technologies. Gabriel’s wide-ranging skills and credentials enable him to excel in cybersecurity, helping organizations protect their critical assets and information.

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