Secure Linux Mint 22.3 — Essential Hardening Guide | UFW, AppArmor, Fail2Ban, ClamAV & System Tweaks
This step-by-step guide walks you through the essential security hardening process for Linux Mint 22, using only tested and reliable terminal commands. Whether you’re a new Mint user or someone upgrading an existing system, this tutorial gives you the exact tools you need to lock down your system without breaking stability or performance.We start by updating the entire system using apt update and apt upgrade, making sure every package and security patch is current. Then we turn on Mint’s built-in firewall with ufw enable and verify protection using ufw status. These simple steps close off unnecessary network access while keeping your browsing and apps fully functional.
Next, we add Fail2Ban, installed with apt install fail2ban, which automatically protects the system from repeated log-in attempts or brute-force attacks. This is especially helpful if you ever enable SSH or run any services that face the network.
We also strengthen app isolation using AppArmor, switching profiles to enforced mode with aa-enforce. This gives you quiet, background protection by preventing applications from accessing files they shouldn’t touch.
To reduce the overall attack surface, we disable unused services like Bluetooth or Avahi using systemctl disable --now, trimming away processes you don’t actually need. Less running software means fewer potential vulnerabilities.
Kernel-level hardening is also covered. We disable core dumps with a simple sysctl rule, preventing attackers from accessing sensitive memory data if something crashes. Users running Secure Boot automatically benefit from kernel lockdown mode.
Finally, we install ClamAV (apt install clamav clamav-daemon) and update its virus signatures with freshclam. It’s a powerful way to scan files, USB drives, and downloads for malware — especially useful if you share data with Windows systems or handle unknown storage devices.
Every command in this tutorial is practical, safe, and fully compatible with Linux Mint 22. By the end, your system will have an active firewall, enforced app policies, brute-force protection, reduced services, hardened kernel behavior, and a working malware scanner — all configured using commands you can trust.
If you're serious about securing your Mint machine, this guide gives you a clean, reliable foundation.
Chapters:
00:00 Intro — Why secure Mint 22
00:10 Update & Patch System
00:30 Enable UFW Firewall
00:45 Install & Start Fail2Ban
01:05 Enforce AppArmor Profiles
01:25 Disable Unused Services
01:45 Kernel Hardening Basics
02:05 Install & Update ClamAV
02:30 Quick Security Recap & Outro
linux mint 22, linux mint 22 security, secure linux mint 22, linux mint hardening, linux mint firewall, ufw linux mint, apparmor linux mint, fail2ban linux, linux security tutorial, linux mint guide, mint 22 hardening, clamav linux mint, linux antivirus, linux security commands, secure ubuntu based distro, lock down linux mint, linux desktop security, techsolutionz, linux mint tips, linux mint 2025, linux secure setup, linux mint beginner security, enhance linux security, linux privacy and security Receive SMS online on sms24.me
TubeReader video aggregator is a website that collects and organizes online videos from the YouTube source. Video aggregation is done for different purposes, and TubeReader take different approaches to achieve their purpose.
Our try to collect videos of high quality or interest for visitors to view; the collection may be made by editors or may be based on community votes.
Another method is to base the collection on those videos most viewed, either at the aggregator site or at various popular video hosting sites.
TubeReader site exists to allow users to collect their own sets of videos, for personal use as well as for browsing and viewing by others; TubeReader can develop online communities around video sharing.
Our site allow users to create a personalized video playlist, for personal use as well as for browsing and viewing by others.
@YouTubeReaderBot allows you to subscribe to Youtube channels.
By using @YouTubeReaderBot Bot you agree with YouTube Terms of Service.
Use the @YouTubeReaderBot telegram bot to be the first to be notified when new videos are released on your favorite channels.
Look for new videos or channels and share them with your friends.
You can start using our bot from this video, subscribe now to Secure Linux Mint 22.3 — Essential Hardening Guide | UFW, AppArmor, Fail2Ban, ClamAV & System Tweaks
What is YouTube?
YouTube is a free video sharing website that makes it easy to watch online videos. You can even create and upload your own videos to share with others. Originally created in 2005, YouTube is now one of the most popular sites on the Web, with visitors watching around 6 billion hours of video every month.
