Security

This guide shows you how to secure your Nginx with Let’s Encrypt that generates SSL/TLS certificates for your domain. In addition, you will learn how to enabled Certbot to renew certificates automatically.

This article demonstrates 3 distinct methods used to port forward SSH connections. It examines the syntax of the individual commands and teaches you everything you need to know to implement SSH port forwarding successfully.

This article explains two methods of generating SSH keys on a Windows 10 system. One method uses the PuTTY tool, while the other uses the OpenSSH client utility.

This article deals with the most common causes of the "ssh_exchange_identification: read: Connection reset by peer" error. At the same time, we offer expert solutions for this error, such as managing Host-Based Access Control Lists, changing…

Install an SSL Certificate on NGINX to ensure a safe connection between your web server and browser. Encrypt transmitted data over the internet so that it is only visible to the intended recipient.

Once you install MariaDB, one of the first things you need to do is to create a new MariaDB user. This article explains how to create a MariaDB user, and then how to grant privileges to the newly created user.

Learn how to use iptables commands and see how iptables works. By following the instructions listed in this article, you'll get a better understanding of network packets, and can configure basic rules for your system and set up ports on the firewall…

This article presents basic security principles such as defense-in-depth and restricted privilege. Learn how to apply these principles in a distributed system such as a Kubernetes cluster.

Learn how to use the su command with practical examples and explanations. Change users in the terminal window or switch to the root in a single step. This article tells you all you need to know about su.

UFW is a simple interface implemented on top of iptables that provides an easier way to configure a firewall. Use it to define rules of communication to and from a server and ensure your Ubuntu 18.04 is protected.