COMIDOC
CouponsFreeTopics
COMIDOC
CouponsVerified CouponsFreeFree CoursesTopicsTopics
React
AdvertiseSubmit Course

About

Udemy coupons monitored continuously.

Verified offers, course alerts, precise filters, and browser detection built for learners who want coupons that still work.

TelegramTwitterFacebookRSS

Browser tools

Find coupons directly on Udemy.

The extension surfaces an available Comidoc coupon while you browse a Udemy course page.

ChromeFirefoxEdge

Useful links

Discover

  • Blog
  • Daily Freebies
  • Most Wanted Coupons
  • Top Contributors
  • Udemy Sale Calendar

Services

  • Pricing
  • Advertise Here
  • Developer API
  • Submit Coupon

Comidoc

  • About
  • Contact
  • Data License
  • Privacy
  • Terms

© 2017–2026 Comidoc

v6.6.30

Independent coupon discovery for Udemy learners

Course topic

  1. Topics
  2. IT & Software
  3. Linux Security Hardening

Linux Security Hardening

Also indexed asServer Security · SELinux · Network Security

Implement crucial security measures, including SELinux and firewall management, for robust Linux servers.

Courses indexed
59
Live offers
2
Free & coupon courses onlyChange view
Ethical Hacking: Linux Intrusion Essentials
Instructor Frank Anemaet
Frank Anemaet
1 course
English
Ethical Hacking: Linux Intrusion Essentials

Ethical Hacking: Linux Intrusion Essentials

(4.31 with 96 reviews)
12.9K
students
33 minutes
content
Dec 2023
updated
$14.99
Linux Security: Network Defense with Snort
Instructor Frank Anemaet
Frank Anemaet
1 course
English
Linux Security: Network Defense with Snort

Linux Security: Network Defense with Snort

(4.38 with 44 reviews)
5.0K
students
32 minutes
content
Dec 2023
updated
$14.99
Total: CompTIA Linux+ (XK0-006)
Instructor Total Seminars Over 1 Million Enrollments
Total Seminars Over 1 Million Enrollments
1 course
English
Total: CompTIA Linux+ (XK0-006)

Total: CompTIA Linux+ (XK0-006)

(5.00 with 2 reviews)
53
students
16 hours
content
Mar 2026
updated
$14.99
Hacking Ético com Inteligência Artificial: Pentest Moderno
Instructor Josué Pedro
Josué Pedro
1 course
Portuguese
Hacking Ético com Inteligência Artificial: Pentest Moderno

Hacking Ético com Inteligência Artificial: Pentest Moderno

(4.80 with 6 reviews)
100
students
2.0 hours
content
Apr 2026
updated
FREE
Ethical Hacking: Password Cracking
Instructor Peter A
Peter A
1 course
English
Ethical Hacking: Password Cracking

Ethical Hacking: Password Cracking

(4.49 with 47 reviews)
6.1K
students
1.0 hours
content
Jun 2022
updated
$14.99
AppArmor - Linux Security
Instructor Peter A
Peter A
1 course
English
AppArmor - Linux Security

AppArmor - Linux Security

(3.91 with 106 reviews)
12.7K
students
38 minutes
content
Apr 2019
updated
$14.99
Linux Security Checkup: Quick Audit Essentials
Instructor Frank Anemaet
Frank Anemaet
1 course
English
Linux Security Checkup: Quick Audit Essentials

Linux Security Checkup: Quick Audit Essentials

(4.42 with 67 reviews)
9.3K
students
53 minutes
content
Feb 2024
updated
$14.99
Linux Security & Network Hardening: Practical Defense
Instructor CloudsArk Academy
CloudsArk Academy
1 course
English
Linux Security & Network Hardening: Practical Defense

Linux Security & Network Hardening: Practical Defense

(4.23 with 13 reviews)
5.7K
students
2.6 hours
content
Jun 2025
updated
$17.99
LPI Security Essentials. Certificación Completa. Exámenes
Instructor Alvaro Chirou
Alvaro Chirou
1 course
Spanish
LPI Security Essentials. Certificación Completa. Exámenes

LPI Security Essentials. Certificación Completa. Exámenes

(4.69 with 60 reviews)
13.2K
students
20 hours
content
Mar 2025
updated
$17.99
Array Interview Question Practice Test
Instructor Prakash Mallik
Prakash Mallik
1 course
English
Array Interview Question Practice Test

Array Interview Question Practice Test

312
students
N/A
content
Feb 2026
updated
$14.99
Mastering RHCE EX294 - Linux Red Hat Certified Engineer
Instructor Muhammad Usman Anwar
Muhammad Usman Anwar
1 course
English
Mastering RHCE EX294 - Linux Red Hat Certified Engineer

Mastering RHCE EX294 - Linux Red Hat Certified Engineer

102
students
1.2 hours
content
Nov 2025
updated
$14.99
Page 5 of 5
12345

Continue exploring

Topics related to Linux Security Hardening

  • 01Server Security43
  • 02Linux Administration277
  • 03RHEL System Administration16
  • 04CompTIA Linux+ Exam25
  • 05Network Security Essentials1055
  • 06Security Baselines8
  • 07Kali Linux Essentials121
  • 08Iptables Firewall7
  • 09Linux Administration168
  • 10Linux Server Security5