Today we will get acquainted with another widespread and up-to-date distribution - CentOS. To begin, let's remind you of the basic terms that will help you navigate through the article: Linux (Linux) is a whole family of open-source Unix operating systems based on the Linux kernel. This includes all the…
The terminal and text commands are the primary way to manage a Linux operating system, especially for a server. And although the word "terminal" scares newcomers, believe us, it's much more straightforward. Today we have prepared a cheat sheet with basic commands for you - bookmark it and increase your…
IMPORTANT: The guidelines below are for those who know how to set up SSH login and two-factor authentication. If you don't know how to do it, check the documentation on the subject first. Otherwise, you risk not securing SSH access to the server but hurting yourself. There is another way…
Our top priority is to secure and protect data from unauthorized access. We are all aware of the permissions we set using some handy Linux commands like chmod, chown & chgrp. However, these default permissions sets have some limitations and at times do not work to meet our requirements. For…
What is Rsync? Rsync stands for “remote synchronization”. It is a remote and local file synchronization tool that helps you efficiently transfer files. Rsync is faster than tools like Secure Copy Protocol (SCP) as it uses the delta-transfer algorithm that minimizes the data transfer by copying only the sections of…
In this short article, we will describe useful steps to prevent attacks and other malicious attempts like DDOS attacks and various Nmap scans. Assuming we do the configuration on a Debian-based system. First of all, we need to install the necessary tools apt-get install ipset iptables-persistent fail2ban Let's start adding…