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Tecmint: Linux Howtos, Tutorials & Guides
  • Learn Linux
  • Linux Distros
    • Linux Distros for Beginners
    • Linux Distros for Experts
    • New Linux Distros
    • Linux Server Distros
    • Secure Linux Distros
    • CentOS Alternatives
    • RedHat Distributions
    • Debian Distributions
    • Ubuntu Distributions
    • Arch Linux Distros
    • Rolling Linux Distros
    • KDE Linux Distros
    • Linux Distros for Old PC
    • Linux Distros for Kids
    • Linux Distributions for Students
    • Linux Distros for Windows
  • Commands
    • A – Z Linux Commands
    • 100+ Linux Commands
  • Tools
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    • LFCS Certification
  • eBooks
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  • About
    • Contact
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OpnSense Firewall

Install and Configure OPNSense Firewall

How to Install and Configure Basic OpnSense Firewall

In a prior article, a firewall solution known as PfSense was discussed. In early 2015 a decision was made to

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Linux Commands and Tools

Display Command Output or File Contents in Column Format

How to Fix “passwd: Authentication token manipulation error” in Linux

8 Mysterious Uses of (!) Operator in Linux Commands

Linux Fun – How to Create ASCII Text Banners in Terminal

Transfer.sh – Easy File Sharing from Linux Commandline

How to Send a Message to Logged Users in Linux Terminal

Linux Server Monitoring Tools

Arpwatch – Monitor Ethernet Activity {IP and Mac Address} in Linux

How to Boost Linux Server Internet Speed with TCP BBR

Dool – All-in-One Linux Server Performance Monitoring Tool

How to Setup Central Logging Server with Rsyslog in Linux

bmon – A Powerful Network Bandwidth Monitoring and Debugging Tool for Linux

nload – Monitor Linux Network Bandwidth Usage in Real Time

Learn Linux Tricks & Tips

How to Set and Unset Local, User and System Wide Environment Variables in Linux

How to Convert From RPM to DEB and DEB to RPM Package Using Alien

Show a Custom Message to Users Before Linux Server Shutdown

How to Find MySQL, PHP and Apache Configuration Files

How to Restore Deleted /tmp Directory in Linux

How to Check Timezone in Linux

Best Linux Tools

The 27 Best IDEs and Code Editors for Linux

10 Best Linux File and Disk Encryption Tools (2024)

5 GUI Tools to Free Up Space on Debian, Ubuntu and Linux Mint

Top 5 Open-Source OCR Tools for Linux in 2025

10 Best File Comparison and Difference (Diff) Tools for Linux

32 Best File Managers and Explorers [GUI + CLI] for Linux in 2024

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