Iptables is basically a powerful firewall, which can allow a user to set specific rules to control incoming and outgoing...

For security reasons it is recommended to use SSH keys instead of password for accessing server. The biggest advantage SSH...

In this article, we will cover basics of MySQL server optimization. For server example, we will take VPS plan with...

Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a...

How do you block an IP using iptables? iptables -A INPUT -s xx.xx.xx.xx -j DROP How do you block an...

ConfigServer Security & Firewall is a popular Linux firewall security suite. It is easy to install, flexible to configure, and...

Here is a simple, straightforward guide to improve VPS security of your VPS server. Change the SSH port One of...

Introduction Most people are familiar with Linux’s top command line utility to see what process is taking the most CPU...

This article introduces basic, simple and yet effective ways to optimize apache service according to VPS resources. By default, apache...