How to Create a Simple IP Blocker Script Using iptables and Fail2Ban
Today, I’m going to show you a simple but effective way to automatically block suspicious IPs…
20 Daily Linux Commands System Administrators Use in Production
As a Linux SysAdmin working in a production environment, your daily routine is all about keeping…
UFW Firewall: How to Install, Configure, and Use It on Ubuntu/Debian
Since computers are connected to each other, services are growing rapidly, with examples such as email,…
How to Install and Use Termius SSH Client on Linux
If you’re a Linux user, managing remote servers or networked devices via SSH (Secure Shell) is…
How to Secure Your Ubuntu Server with UFW, Fail2ban, and AppArmor
When setting up an Ubuntu server for production, securing the system is crucial to ensure its…
How to Create a Backup Script for Important Files in Linux
On a Linux system, having regular backups is critical to protect your data, keep it safe,…
Top 25 Network Ports You Must Know for Interviews
If you’re preparing for a networking, Linux system administration, DevOps, or cybersecurity interview, understanding network ports…
How to Force cp Command to Overwrite Without Confirmation in Linux
The cp command (short for copy) is one of the most commonly used commands in Linux…
How to Speed Up SSH Access with Shortcuts and Auto-Complete
If you use Linux or manage remote servers (like cloud servers on AWS, DigitalOcean, or even…
Intelligence-Led Threat Hunting: The Key to Fighting Cross-Domain Attacks
1. Initial Entry and Exploitation After gaining initial access, the adversary moved laterally through the network…
Linux Problem-Solving Scenarios: Real-World Challenges & Solutions
Linux is a powerful and reliable operating system, but even seasoned users encounter unexpected problems. Whether…
Detect Data Exfiltration Techniques with Falcon Next-Gen SIEM
Adversaries may tamper with organizations’ infrastructure to facilitate data exfiltration. Some examples include:It is essential to…
How to Install and Configure Ubuntu Server in 30 Minutes
Setting up your first Linux server might feel overwhelming at first, especially if you’re new to…
How to Use Rsync to Sync Files Between Linux and Windows Using (WSL)
Synchronizing files between Linux and Windows can seem challenging, especially if you’re not familiar with the…
How to Sync Two Web Servers Using Rsync
When managing a web server, it’s crucial to ensure that your data is safe and can…