How to Install Fail2ban on Rocky Linux and AlmaLinux
Written in Python, Fail2ban is a free and open-source Intrusion Prevention System (IPS) that protects the server against brute-force attacks.
Security
How to Use Port Knocking To Secure SSH Service in Linux
Port Knocking is a nifty technique of controlling access to a port by only allowing legitimate users access to the
How to Do Security Auditing of Linux System Using Lynis Tool
Lynis is an open-source and much powerful auditing tool for Unix/Linux-like operating systems. It scans the system for security information,
LFCA: How to Improve Linux System Security – Part 20
As we all know, the root user is king and wields unlimited privileges over the Linux system. However non-root users
LFCA: How to Improve Linux Network Security – Part 19
In an ever-connected world, network security is increasingly becoming one of the areas where organizations invest a great deal of
LFCA – Useful Tips for Securing Data and Linux – Part 18
Since its release in the early nineties, Linux has won the admiration of the technology community thanks to its stability,
LFCA: Basic Security Tips to Protect Linux System – Part 17
Now more than ever, we are living in a world where organizations are constantly bombarded by security breaches motivated by
How to Use Two-Factor Authentication with Ubuntu
Over time, the traditional username and password authentication has proven inadequate in providing robust security to applications and systems. Usernames
Setup Passwordless SSH Login for Multiple Remote Servers Using Script
SSH Key-based authentication (also known as public-key authentication) allows for password-less authentication and it is a more secure and a
How to Open Port for a Specific IP Address in Firewalld
How can I allow traffic from a specific IP address in my private network or allow traffic from a specific
How to Install Security Updates in Ubuntu
One of the easiest ways to protect your Ubuntu systems is by keeping up to date software on them. Therefore
Protect Apache Against Brute Force or DDoS Attacks Using Mod_Security and Mod_evasive Modules
For those of you in the hosting business, or if you’re hosting your own servers and exposing them to the