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Linux servers are the backbone of the modern Internet. Today, nearly every website and service that you can access through a web browser runs on a Linux distribution. Here we show you how you can secure your Linux server.

Note: this tutorial was created using a Ubuntu server, but it should apply for other Linux distributions too, including your local web server. 

One of the quickest ways to secure your Ubuntu server is to secure your SSH daemon by disabling your Root SSH access. By default, the OpenSSH server allows any incoming connection to log in as the root user.