How To Flush DNS Cache on Linux and Windows?

The DNS cache may fail for various reasons, including network attacks or various types of viruses. When this happens, the IP address becomes problematic for certain popular websites. For example, instead of going to www.google.com,…

How to Use Fail2ban to Secure SSH on CentOS 7

This tutorial will teach you how to install Fail2Ban on CentOS 7. One of the best ways to increase the security of your CentOS 7 server is to install this tool. No server is completely…

How to Set DNS Nameserver on Ubuntu 20.04

What is DNS Nameserver? DNS translates text-based domain names into numeric IP addresses. By default, most networks are configured to work with the DNS servers provided by the Internet service provider. However, you can change…

How To List Hard Disk Drives on Linux?

Why is it important to list disks on the server? If you are a server administrator, you should check the status of your disks. For example, by listing the disks, you can find out whether…

How to Change Login Screen Background of Ubuntu

Ubuntu login screen background The background of the Ubuntu login page is not something we pay much attention to. However, you may be tired of the static image of this section and want to change…

5 Useful Performance and Network Monitoring Tools for Linux

Why do we need Linux monitoring tools? If you are a SysAdmin dealing with Linux operating system, you need to have useful monitoring tools to monitor your system performance. Linux monitoring tools are very important…

How to Install Enlightenment on Ubuntu

Enlightenment tools Enlightenment is used in our system (PC/Laptop) to provide the smallest information about the system. It also offers an advanced graphical interface without compromising or slowing down performance. Enlightenment tools are used to…

How to Install NTP Server and Client on Ubuntu

How to install NTP server in Linux Ubuntu An NTP server is a network time protocol. NTP is responsible for synchronizing system time and date to prevent communication problems in a large global network. You…
better for programming

Linux or Windows or Mac is better for programming

Many people use Windows as their main computer operating system. However, if you are new to programming, you may see many references to Linux and Mac by experts in the field. Linux is a very…

An introduction to Linux Access Control Lists

An introduction to Linux Access Control Lists The security category is particularly important in setting up all kinds of sites, to the extent that many site managers bear huge costs to ensure the security of…