How to Set Up SSH Keys on Ubuntu 20.04
This article explains how to generate SSH keys on Ubuntu 20.04 systems. We'll also show you how to set up an SSH key-based authentication and connect to remote Linux servers without entering a password.
How to Change the SFTP Port
SFTP is a secure file protocol for transferring files between two hosts over an encrypted connection. The default SFTP port is 22.
How to Set Up WireGuard VPN on CentOS 8
WireGuard is a simple and modern VPN (Virtual Private Network) with state-of-the-art cryptography. This tutorial describes how to set up WireGuard on an CentOS 8 machine that will act as a VPN server.
How to Set Up a Firewall with UFW on Ubuntu 20.04
This article describes how to use the UFW tool to configure and manage a firewall on Ubuntu 20.04. UFW is a user-friendly front-end for managing iptables firewall rules.