NOTE: While this may still work the information is out of date. Please see the instructions found here eff.org for more up-to-date instructions. Free SSL Certificate with Let’s Encrypt If you have ever installed an SSL certificate you know that it can be a tedious process. Let’s Encrypt makes this easy. Just call the letsencrypt command from the terminal and point it at your domain. Securing your website with a valid ssl certificate from a recognized and trusted vendor shows your website visitors that information transmitted between your site and their browser is encrypted.

Patching is arguably the single most important thing you can do to keep your systems secure. It’s also tedious, boring work that ends with everyone’s least favorite activity…. rebooting some indispensable, far too important for downtime server. Often meaning that patching takes a back seat to convenience, but no more! Starting with Ubuntu 16.04, and continuing on to the latest LTS Ubuntu 18.04 you can now update the kernel on a live system without a reboot.

What is a rsa key? RSA keys are a public key encryption method that keeps a private key on the host computer, and a public key on other machines. The public key is generated by a mathematical algorithm that can only be de-crypted with the private key. As long as the private key is kept confidential use of the keys is secure.Why use rsa keys? rsa keys are secure The keys are secure because they can be encrypted on a users computer protecting the key from falling into the wrong hands, like a password printed on a sticky note and place on your desk.

Just a quick look at df and du. This comes up a lot when we have filesystems that are filling up and need to find out which directories or logs are using the space. How to find the size of mounted filesystems From the terminal enter the df command. luke@testserver:~$ df -h Filesystem Size Used Avail Use% Mounted on udev 492M 12K 492M 1% /dev tmpfs 100M 780K 99M 1% /run /dev/xvda1 15G 3.

Have you ever wanted to set up your own video streaming service on your home or work network? This simple guide will help you set up a media server using Ubuntu 14.04 and Plex. The setup for Plex on Ubuntu is incredibly easy and is a great way to back up your existing video, music and picture library in a way that will allow you to share the content with anyone on or off your network.

There are lots of reasons to use Linux for your networking needs both at home and at work not the least of which is the unbeatable price (free). Linux has a well deserved reputation for security and high availability that is unrivaled among modern operating systems. Setting up a dhcp and dns server with Linux is not as hard as you might think especially when using a package called “dnsmasq”. Dnsmasq is a lightweight package that is available from the default Ubuntu repositories.