Eine Zertifizierungsstelle (Certificate Authority, CA) ist eine Stelle, die für die Ausstellung digitaler Zertifikate zur Überprüfung von Identitäten im Internet verantwortlich ist. Obwohl öffentliche CAs eine beliebte Wahl…
Here we’ll install and configure OpenVPN on a CentOS 7 server. We’ll also discuss how to connect a client to the server on Windows, OS X, and Linux.
In this tutorial, you’ll learn how to restrict access to an Nginx-powered website using the HTTP basic authentication method on Ubuntu 14.04. HTTP basic authentication is a simple username and (hashed) password authentication method.
This article will go over how to enable SSH authentication using an OATH-TOTP app in addition to an SSH key. Logging into your server via SSH will then require two factors across two channels, thereby making it more secure than a password or SSH key alone.
This tutorial will walk you through password-protecting assets on an Apache web server running on Ubuntu 20.04 in order to provide your server with additional security.
SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with a CentOS server, chances are you will spend most of your time in a terminal session connected to your server through SSH.
SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH key-based authentication on an Ubuntu 18.04 installation.
FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files. Many casual Internet users expect to download…
Keeping your FreeBSD server updated is an important part of system administration. This guide walks you through the entire upgrade process.
GPG, or GNU Privacy Guard, is a public key cryptography implementation. This allows for the secure transmission of information between parties and can be used to verify that the origin of a message is genuine. In this guide, we will discuss how GPG works and how to…
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