One way to strengthen your SSH setup is by enabling Two-Factor Authentication (2FA), which adds an additional layer of security. While the setup process involves a few steps, the additional security layer is well worth the effort. Whether you’re managing a personal project server or a critical production environment, adding 2FA to SSH ensures that […]
Category: GNU/Linux
nload is a command-line tool used to monitor network traffic in real time on Unix/Linux systems. It displays incoming and outgoing traffic separately for a specified network interface, showing visual graphs of bandwidth usage. Users can easily switch between interfaces and adjust display settings, making it useful for monitoring network performance and bandwidth consumption. Installation […]
When working with Secure Shell (SSH), a common yet frustrating error many users encounter is the “Host Key Verification Failed” message. The “Host Key Verification Failed” error in SSH is an essential security feature designed to protect you from connecting to potentially malicious servers. It can be an inconvenience to debug, especially when legitimate changes […]
The ‘ls’ command in GNU/Linux & Unix is a fundamental tool for listing the contents of directories. It provides valuable insights into file and directory information, including names, sizes, permissions, and modification times. This cheat sheet serves as a quick reference guide for utilizing the various options of the ‘ls’ command. Syntax ls [options] [file(s) […]
Fail2ban provides a command-line interface (CLI) that allows you to perform various tasks related to monitoring and managing banned IP addresses, jails, and the Fail2ban service. Here are some commonly used Fail2ban day-to-day management commands collected in a mini cheat sheet. The “sudo” prefix Your user must have super user access to run most of […]