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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
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    • 100+ Linux Commands
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    • RHCE Certification
    • LFCS Certification
  • eBooks
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Security

Scan Linux for Malware and Rootkits

5 Tools to Scan a Linux Server for Malware and Rootkits

There are constant levels of high attacks and port scans on Linux servers all the time, while a properly configured

Lock User Accounts Failed Logins in Linux

How to Lock and Unlock User After Failed SSH Logins

SSH security is a top priority when setting up your server. The default SSH settings are usually not robust enough

Install Tor Browser in Linux

Tor Browser – How to Browse Web Anonymously in Linux

The primary application we require to perform our internet activity is a browser, a web browser to be more perfect

How to Access a Remote Server Using a SSH Jump Host

A jump host (also known as a jump server) is an intermediary host or an SSH gateway to a remote

Remove Passphrase in Linux

How To Remove SSL Certificate and SSH Key Passphrase in Linux

Brief: Have you created a certificate key or private key with a passphrase and wish to remove it? In this

Prevent SSH Brute-Force Login Attacks in Linux

5 Best Practices to Prevent SSH Brute-Force Login Attacks in Linux

Servers running SSH are usually a soft target for brute-force attacks. Hackers are constantly coming up with innovative software tools

SSH Banner Warning Message

How to Show Security Warning Message to SSH Unauthorized Users

SSH banner warnings are crucial when companies or organizations want to show a strict warning message to discourage unauthorized users

Install Suricata Intrusion Detection Tool in Linux

Suricata – A Intrusion Detection, Prevention, and Security Tool

Suricata is a powerful, versatile, and open-source threat detection engine that provides functionalities for intrusion detection (IDS), intrusion prevention (IPS),

Set Correct SSH Directory Permissions in Linux

How To Set Correct SSH Directory Permissions in Linux

For SSH to work well, it requires correct permissions on the ~/.ssh or /home/username/.ssh directory: the default location for all

Linux PHP Hardening Security Tips

Top PHP Hardening Security Tips for Linux Servers

It’s no brainier that PHP is one of the most used server scripting programming languages. It makes sense for an

Block SSH Brute Force in Linux

How to Block SSH Brute Force Attacks Using SSHGUARD

SSHGuard is an open-source daemon that shields hosts from brute-force attacks. It accomplishes this through monitoring and aggregation of system

Set SSH Warning Banner in Linux

How to Set a Custom SSH Warning Banner and MOTD in Linux

SSH banner warnings are necessary when companies or organizations want to display a stern warning to discourage unauthorized parties from

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Linux Commands and Tools

27 ‘DNF’ (Fork of Yum) Commands for RPM Package Management in Linux

5 Advanced Archive Tools for Linux Command Line – Part 2

Sysadmins & DevOps: 20 Must-Know Advanced Linux Commands

How to Rename Files Using mmv for Advanced Renaming

How to Run Linux Commands in Background and Detach in Terminal

How to Block USB Storage Devices in Linux Servers

Linux Server Monitoring Tools

How to Monitor Performance Of CentOS 8/7 Server Using Netdata

How to Install Zabbix on RHEL/CentOS and Debian/Ubuntu – Part 1

How to Setup Rsyslog Client to Send Logs to Rsyslog Server in CentOS 7

How to Use Nmap Script Engine (NSE) Scripts in Linux

Nmon – Monitor Linux System and Network Performance

BCC – Tracing Tools for Linux IO, Networking, Monitoring, and More

Learn Linux Tricks & Tips

Learn How to Set Your $PATH Variables Permanently in Linux

How to Copy a File to Multiple Directories in Linux

3 Ways to List All Installed Packages in RHEL, CentOS and Fedora

4 Ways to Batch Convert Your PNG to JPG and Vice-Versa

Use ‘pushd’ and ‘popd’ for Efficient Filesystem Navigation in Linux

Googler: A Command Line Tool to Do ‘Google Search’ from Linux Terminal

Best Linux Tools

Top 6 Partition Managers (CLI + GUI) for Linux

Top 6 Command Line Music Players for Linux Users

How to Open and Edit Apple iWork Files on Linux

27 Best Tools for VMware Administrators in 2024

11 Best Open Source Note-Taking Apps for Linux

Top 6 Telegram Bots to Boost Your Productivity in 2025

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