Contributions

11 Contributions
  • Tutorial

    How to Verify Downloaded Files

    Verifying downloaded files ensures that what you downloaded is what you think it is. In this tutorial, you'll learn what file verification is, why it's important, and how to do it on various operating systems using co...
    By Michael Holley System Tools Security
  • Tutorial

    How To Install Your Own Webmail Client with Roundcube on Ubuntu 16.04

    If you want to stop seeing ads when you check your email, or if you've moved from a public email service to your own domain, you can run your own webmail client (also known as a mail user agent or MUA). In this tutori...
    By Michael Holley Email LAMP Stack Ubuntu 16.04
  • Tutorial

    How To Secure Roundcube on Ubuntu 16.04

    In this tutorial, you'll secure an existing basic Roundcube installation by adding SSL to Apache with Let's Encrypt, adding two-factor authentication to your Roundcube account with a Roundcube plugin, and using GPG to...
    By Michael Holley Email LAMP Stack Let's Encrypt Security Ubuntu 16.04
  • Tutorial

    How To Set Up Multi-Factor Authentication for SSH on CentOS 7

    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 s...
    By Michael Holley Security CentOS
  • Tutorial

    How To Set Up Multi-Factor Authentication for SSH on Ubuntu 16.04

    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 s...
    By Michael Holley Security Ubuntu Ubuntu 16.04
  • Tutorial

    How To Host a File Sharing Server with Pydio on Ubuntu 14.04

    As adoption of the cloud increases, more and more data is being stored remotely. From music to pictures to personal documents, many people are uploading files onto servers they don't manage. If you'd rather keep your ...
    By Michael Holley Miscellaneous Apache Ubuntu
  • Tutorial

    How To Route Web Traffic Securely Without a VPN Using a SOCKS Tunnel

    You can browse the web securely using a Droplet with SSH access as a SOCKS 5 proxy end point. In this tutorial we'll use a Ubuntu 14.04 Droplet as the proxy, and the Firefox web browser as the client application. By t...
    By Michael Holley Security Ubuntu
  • Tutorial

    How To Set Up Multi-Factor Authentication for SSH on Ubuntu 14.04

    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 s...
    By Michael Holley Security Ubuntu
  • Tutorial

    How To Install the Lita Chat Bot for IRC on Ubuntu 14.04

    Many modern DevOps teams are putting more and more infrastructure around the chatroom. One of the main motivations behind this chatroom infrastructure is because of chatroom bots, which DevOps teams use to help get th...
    By Michael Holley Miscellaneous Ubuntu
  • Tutorial

    How To Set Up a Masterless Puppet Environment on Ubuntu 14.04

    Typically, a user pushes their Puppet modules to a version control server, then pulls those modules down to a Puppet master. Puppet clients periodically connect to the Puppet master to pull and apply any changes. This...
    By Michael Holley Configuration Management Git Ubuntu
  • Tutorial

    How To Sync Calendars and Contacts Using CardDAV and CalDAV Standards with Baïkal on Ubuntu 14.04

    The CalDAV and CardDAV standards provide an easy way to keep all our smart things up-to-date with what we are doing, as well as how to get hold of our friends and other contacts. In this tutorial, we'll show you how t...
    By Michael Holley Control Panels Apache Nginx Ubuntu