Learn how to secure Linux/UNIX

The Securing Linux/UNIX Learning Path will show you many facets of securing the Linux operating system. We will cover various topics, including understanding Linux users and groups, UIDs and GUIDs, file-level permissions and more.

9 courses  //   29 videos  //   4 hours of training

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Securing Linux/UNIX training

Explore the many challenges of securing the Linux operating system. We’ll look at Linux users and groups, network security, port scanning, running daemons as a regular user versus running as root, and everything to do with sudo. We will also dig into the details of SSH hardening and tunneling, TCP wrappers, basic firewall usage and packet sniffing.

Learning path components

Securing Linux/UNIX Skill Assessment
Assessment
Securing Linux/UNIX Skill Assessment

Securing Linux/UNIX Skill Assessment

See how your Linux/UNIX skills stack up against other professionals in your field.

Number of questions: 20

Securing Linux/UNIX Project
Practice Exam
Securing Linux/UNIX Project

Securing Linux/UNIX Project

Test your understanding of securing Linux and UNIX in this project consisting of five challenges. You'll get hands-on experience using sudo, configuring OpenSSH, identifying and configuring access to TCP ports, decrypting and encrypting with GPG, and using SELinux.

Number of questions: 5

Linux Users
Course
Linux Users

Linux Users

An introduction to file permissions in Linux.

5 videos
43 minutes of training

All About SSH
Course
All About SSH

All About SSH

In this course, we will look at SSH usage and how to lock it down.

4 videos
53 minutes of training

Linux and open ports with daemons
Course
Linux and open ports with daemons

Linux and open ports with daemons

Does your server have exposed ports? Learn how to find out in this course.

2 videos
17 minutes of training

TLS/SSL Certificates
Course
TLS/SSL Certificates

TLS/SSL Certificates

A crash course on SSL/TLS certificates.

4 videos
28 minutes of training

Firewalls on Linux
Course
Firewalls on Linux

Firewalls on Linux

Taking a look at Layer 3 and Layer 7 firewalls on Linux.

3 videos
24 minutes of training

IDS/IPS on Linux
Course
IDS/IPS on Linux

IDS/IPS on Linux

Setting up host IDS and IPS on Linux.

4 videos
29 minutes of training

Encryption using GPG
Course
Encryption using GPG

Encryption using GPG

An introduction to GPG on Linux.

2 videos
19 minutes of training

SELinux
Course
SELinux

SELinux

Getting to know SELinux.

2 videos
32 minutes of training

Security Scanning
Course
Security Scanning

Security Scanning

A look at security and vulnerability scanning on Linux.

3 videos
17 minutes of training

 

What you’ll learn.

  • Securing the server
  • Securing applications running on the server
  • Encrypting application traffic with GPG and TLS
  • Basics of security applications like IPS and IDS
  • Hardening guides and programs

Who is this for?

  • Security engineers
  • Linux engineers
  • Cybersecurity analysts
  • GCP cloud hosting administrators
  • Anyone interested in learning more about Linux system administration

Meet the author

Jason Welsh

Jason Welsh started experimenting with Linux back in 1994 when it was still packaged on floppy disks. Over the years, he has run just about every flavor of Linux there is as well as a few years trying out FreeBSD.

He has been administering Solaris and Linux systems professionally since around 2003, supporting everything from Linux running on server hardware to storage to VPNs and firewalls. He’s always on the lookout for new and exciting things to try out in his home lab, which runs a Proxmox server. He’s tolerant of all Linux distributions, but the current favorite is Arch or Manjaro Linux.

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