Install Magento eCommerce Site on Ubuntu 20.04 Server with Nginx

This tutorial is going to show you how to install Magento on Ubuntu 20.04 with Nginx, MariaDB and PHP7.4 (LEMP Stack). Magento is a very popular open-source e-commerce platform for company to set up their own e-commerce store on their own servers. PHP7.4 made into the Ubuntu 20.04 repository and Magento runs perfectly with it.…


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Install Magento eCommerce Site on Ubuntu 20.04 Server with Nginx

How to Install Mailtrain v2 on Ubuntu 20.04 Server

This tutorial will show you how to install Mailtrain v2 on Ubuntu 20.04 without Docker. Mailtrain is an open-source self-hosted newsletter app, an alternative to commercial email service providers like Mailchimp. You can use Mailtrain to send emails to your email subscribers via your own email server or by using any SMTP relay service (Sendinblue, SendGrid,…


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How to Install Mailtrain v2 on Ubuntu 20.04 Server

Part 3: PostfixAdmin – Create Virtual Mailboxes on Debian 11/10 Mail Server

In previous articles, we discussed how to set up your own mail server on Debian from scratch. In part 1 and part 2 of this tutorial series, we learned how to set up Postfix SMTP server and Dovecot IMAP server, but so far we can only have email addresses for users with local Unix account.…


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Part 3: PostfixAdmin – Create Virtual Mailboxes on Debian 11/10 Mail Server

Install Mautic Self-Hosted Email Marketing on Debian 11

This tutorial will be showing you how to set up Mautic email marketing platform on Debian 11 with Apache or Nginx web server. Mautic is a free open source alternative to commercial email service providers like MailChimp. Mautic Features Lead nurturing and tracking Marketing campaigns Dripflow programs Modern email and landing page builder based on…


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Install Mautic Self-Hosted Email Marketing on Debian 11

How to Easily Set Up a Mail Server on Debian 11 Bullseye with iRedMail

Setting up your own email server on Linux from scratch is a pain in the butt, if you are not a skilled server admin. This tutorial will be showing you how to use iRedMail to quickly set up a full-featured mail server on Debian 11, saving you lots of time and headaches. What is iRedMail?…


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How to Easily Set Up a Mail Server on Debian 11 Bullseye with iRedMail

Connect to Wi-Fi From Terminal on Debian 11/10 with WPA Supplicant

This tutorial is going to show you how to connect to Wi-Fi network from the command line on Debian 11/10 server and desktop using wpa_supplicant, which is an implementation of the supplicant component for the WPA protocol. A supplicant in wireless LAN is client software installed on end-user’s computer that needs to be authenticated in…


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Connect to Wi-Fi From Terminal on Debian 11/10 with WPA Supplicant

Set Up OpenStreetMap (OSM) Tile Server on Debian 11 Bullseye

OpenStreetMap (OSM) is a user-contributed, freely-editable world map. You can think of it as an open-source and self-hosted alternative to Google Maps. This tutorial will show you how to build your own OpenStreetMap tile server on Debian 11 so you don’t have to use a proprietary map service. OpenStreetMap Features OpenStreetMap data covers the whole…


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Set Up OpenStreetMap (OSM) Tile Server on Debian 11 Bullseye

Set Up OpenConnect VPN Server (ocserv) on Debian 11 Bullseye

This tutorial is going to show you how to run your own VPN server by installing OpenConnect VPN server on Debian 11 Bullseye. OpenConnect VPN server, aka ocserv, is an open-source implementation of the Cisco AnyConnnect VPN protocol, which is widely used in businesses and universities. AnyConnect is an SSL-based VPN protocol that allows individual…


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Set Up OpenConnect VPN Server (ocserv) on Debian 11 Bullseye

2 Ways to Upgrade Ubuntu 20.04/21.04 To 21.10 (GUI & Terminal)

Ubuntu 21.10, codenamed Impish Indri, is released on October 14, 2021. This tutorial is going to show you 2 ways to upgrade Ubuntu 20.04/Ubuntu 21.04 to 21.10. The first method uses the graphical update manager and the second method uses command line. Usually, you use the graphical update manager to upgrade Ubuntu desktop and use…


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2 Ways to Upgrade Ubuntu 20.04/21.04 To 21.10 (GUI & Terminal)

How to Set Up Zimbra Open-Source Mail Server on Ubuntu 18.04

Setting up your own email server on Linux from scratch is a long and tedious process, a pain in the butt if you are not an advanced user. This tutorial will be showing you how to use Zimbra to quickly set up a full-featured mail server on Ubuntu 18.04, saving you lots of time and…


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How to Set Up Zimbra Open-Source Mail Server on Ubuntu 18.04

How to Set Up Email Server with Plesk on Ubuntu 20.04

Setting up your own email server on Linux from scratch is a long and tedious process, a pain in the butt if you are not an advanced user. This tutorial will be showing you how to use Plesk to quickly set up a full-featured mail server on Ubuntu 20.04, saving you lots of time and…


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How to Set Up Email Server with Plesk on Ubuntu 20.04

Part 4: Set Up SPF & DKIM with Postfix on Debian Server

After completing part 1 and part 2, we have a working Postfix SMTP server and Dovecot IMAP server. We can send and receive emails using a desktop email client. In this tutorial, we are going to learn how to improve email delivery to the recipient’s inbox by setting up SPF and DKIM on Debian server.…


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Part 4: Set Up SPF & DKIM with Postfix on Debian Server

Part 2: Install Dovecot IMAP server on Debian & Enable TLS Encryption

This is part 2 of building your own secure email server on Debian from scratch tutorial series. In part 1, we showed you how to set up a basic Postfix SMTP server. In this tutorial, we are going to configure the email server so that we can receive and send emails using a desktop email…


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Part 2: Install Dovecot IMAP server on Debian & Enable TLS Encryption

Build Email Server From Scratch on Debian - Basic Postfix Setup

Why run your own email server? Perhaps you have a website, which needs to send emails to users, or maybe you want to store your emails on your own server to protect your privacy. However, building your own email server can be a pain in the butt because there are so many software components you…


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Build Email Server From Scratch on Debian - Basic Postfix Setup

Postfix SMTP Multiple Instances with IP Rotation on a Single VPS

This tutorial is going to show you how to set up multiple instances of Postfix SMTP server with IP rotation on a single VPS (virtual private server). Why Use Multiple IP Addresses If you send bulk emails using a self-hosted email marketing software like Mautic, it’s a good practice to use multiple IP addresses to…


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Postfix SMTP Multiple Instances with IP Rotation on a Single VPS

Upgrade Debian 10 Buster to Debian 11 Bullseye From Command Line

Debian 11, codenamed Bullseye, was released on August 14, 2021. This tutorial is going to show you how to upgrade Debian 10 to Debian 11 from the command line. You can follow this tutorial on a Debian 10 desktop, or Debian 10 server. As with every Debian release, Debian 11 will be supported for 5…


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Upgrade Debian 10 Buster to Debian 11 Bullseye From Command Line

How to Install FileRun on Ubuntu 20.04 with Apache/Nginx

This tutorial will be showing you how to install FileRun on Ubuntu 20.04 LTS with Apache/Nginx web server. FileRun is a self-hosted Google Drive/Photos/Music alternative. FileRun Features No index is required. It can access files on the file system directly. Compatible with NextCloud. Automatic file versioning. 100% brandable. Upload your own logo. Extendable. There are…


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How to Install FileRun on Ubuntu 20.04 with Apache/Nginx

How to Set Up Postfix SMTP Relay on CentOS/Rocky Linux with Sendinblue

This tutorial is going to show you how to set up Postfix SMTP relay with Sendinblue on CentOS/Rocky Linux. Postfix is a popular open-source SMTP server. Previously I wrote an article on how to easily set up a full-blown email server on CentOS/Rocky Linux with iRedMail, which helped a lot of readers run their own…


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How to Set Up Postfix SMTP Relay on CentOS/Rocky Linux with Sendinblue

How to Migrate From CentOS 8 to Rocky Linux 8/Alma Linux 8

As you may already know, Red Hat decided to abandon the vanilla CentOS 8 project, which will reach end-of-life on December 31, 2021, and shift its focus to CentOS Stream. This tutorial is going to show you how to migrate from CentOS 8 to Rocky Linux 8/Alma Linux 8. CentOS 8 Alternatives There are several…


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How to Migrate From CentOS 8 to Rocky Linux 8/Alma Linux 8

How to Create a Linux VPS Server on Kamatera

This article is going to explain how to create a Linux VPS (Virtual Private Server) on Kamatera, so you can run your own email server and website. ScalaHosting vs Kamatera In a previous tutorial, I explained how to create a Linux VPS server on Scalahosting, which is my recommended hosting provider for running email servers,…


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How to Create a Linux VPS Server on Kamatera

How to Use Apache JMeter to Load Test Web Applications

Apache JMeter is an open-source load testing tool, available for Linux, macOS, and Windows. In a previous tutorial, we explained how to use Netdata to monitor the performance of Apache/Nginx web servers. Apache JMeter is a great complementary tool for testing your website performance under various load scenarios. JMeter Features Simple and intuitive GUI. It…


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How to Use Apache JMeter to Load Test Web Applications

How to Set Up Tegola Vector Tile Server on Ubuntu 20.04 for OpenStreetMap

Tegola is an open-source vector tile server for OpenStreetMap. Previously we explained the process of setting up OSM tile server, which is a raster-based tile server. This tutorial is going to show you how to set up Tegola vector tile server on Ubuntu 20.04. Benefits of Vector Tiles Better display quality for high DPI devices…


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How to Set Up Tegola Vector Tile Server on Ubuntu 20.04 for OpenStreetMap

How to Set Up Postfix SMTP Relay on Debian with Sendinblue

This tutorial is going to show you how to set up Postfix SMTP relay with Sendinblue on Debian. Postfix is a popular open-source SMTP server. Previously I wrote an article on how to easily set up a full-blown email server on Debian with iRedMail, which helped a lot of readers run their own email servers.…


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How to Set Up Postfix SMTP Relay on Debian with Sendinblue

How to Fix Common Nginx Web Server Errors

Nginx is a very popular web server these days. This article will show you some common errors when running an Nginx web server and possible solutions. This is not a complete list. If you still can’t fix the error after trying the advised solutions, please check your Nginx server logs under /var/log/nginx/ directory and search…


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How to Fix Common Nginx Web Server Errors

How to Install Mega.nz Cloud Drive on Ubuntu - Free 20GB Storage

This tutorial is going to show you how to install MEGA.nz cloud drive on Ubuntu desktop and server. MEGA.nz is a cloud storage provider from New Zealand. It offers 20GB free storage upon registration and also allows you to get up to 50GB free space. MEGA.nz Features Zero-knowledge encryption (user-controlled end-to-end encryption). Open-source client apps.…


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How to Install Mega.nz Cloud Drive on Ubuntu - Free 20GB Storage

Set Up Unbound DNS Resolver on Ubuntu 20.04 Server

This tutorial will be showing you how to set up a local DNS resolver on Ubuntu 20.04 with Unbound. A DNS resolver is known by many names, some of which are listed below. They all refer to the same thing. full resolver (in contrast to stub resolver) recursive DNS server recursive name server recursive resolver…


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Set Up Unbound DNS Resolver on Ubuntu 20.04 Server

How to Install Syncthing on Linux Mint 20

This tutorial will show you how to install Syncthing on Linux Mint 20. Syncthing is a free, peer-to-peer continuous file synchronization program that allows you to synchronize your files across multiple devices, available for Linux, BSD, macOS, Windows, Android, iOS and Solaris. It’s an open-source alternative to the popular Resilio Sync (formerly known as BitTorrent…


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How to Install Syncthing on Linux Mint 20

How to Set Up a Secure FTP Server on Debian 10 with Pure-FTPd

Pure-FTPd is a free open-source FTP server designed with security in mind. In this tutorial, we are going to learn how to set up an FTP server on Debian 10 with Pure-FTPd and how to enforce TLS encryption. Pure-FTPd Features: It supports SSL/TLS encryption and thus passwords and commands can be protected. It can run…


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How to Set Up a Secure FTP Server on Debian 10 with Pure-FTPd

Set Up DNS over HTTPS (DoH) Resolver on Debian with DNSdist

This tutorial will be showing you how to set up your own DNS over HTTPS (DoH) resolver on Debian with DNSdist, so your DNS queries can be encrypted and protected from prying eyes. What is DNS over HTTPS and Why It’s Important DNS (Domain Name System) is responsible for translating domain names to IP addresses.…


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Set Up DNS over HTTPS (DoH) Resolver on Debian with DNSdist

Install OpenLiteSpeed, MariaDB, PHP8.0 on Ubuntu 20.04/18.04 Server

This tutorial is going to show you how to install LOMP stack (OpenLiteSpeed, MariaDB, and PHP8.0) on Ubuntu 20.04/18.04. A software stack is a set of software tools bundled together. LOMP stands for Linux, OpenLiteSpeed, MariaDB/MySQL and PHP, which can power dynamic websites and web applications. Linux is the operating system; OpenLiteSpeed is the web…


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Install OpenLiteSpeed, MariaDB, PHP8.0 on Ubuntu 20.04/18.04 Server

How to Set Up Postfix SMTP Relay on Ubuntu with Sendinblue

This tutorial is going to show you how to set up Postfix SMTP relay with Sendinblue on Ubuntu. Postfix is a popular open-source SMTP server. Previously I wrote an article on how to easily set up a full-blown email server on Ubuntu with iRedMail, which helped a lot of readers run their own email servers.…


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How to Set Up Postfix SMTP Relay on Ubuntu with Sendinblue

What Are The Best Cloud Storage Providers? Here Are The Top 6

Cloud storage providers offer an easy-to-use, secure, and accessible solution, making them more popular than ever. Cloud storage involves storing data in a remote location that is accessible from any device. It increases efficiency and boosts productivity in terms of the backup and security of your data. Cloud storage has a lot of benefits and…


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What Are The Best Cloud Storage Providers? Here Are The Top 6

The best note taking apps for students to install on Linux

Everyone is taking notes. Students take notes when they attend classes, when they study, research, and so on. Taking notes is important because it helps you note down the most important and relevant information that will be of huge help later. This is valid especially in the case of students who need to attend many…


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The best note taking apps for students to install on Linux

Do Not Miss These 10 Steps in Application Security Assessment

If you are a web-based company or even a company that uses the internet for any purpose, application security assessment is the determining factor that shows how careful and responsible you are when it comes to security. Contrary to popular belief, application security assessment is an ongoing process and not something you need to do…


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Do Not Miss These 10 Steps in Application Security Assessment

WireGuard Mesh VPN Encryption for MariaDB Galera Cluster

This tutorial is going to show you how to build a WireGuard mesh VPN and use it to encrypt replication traffic in MariaDB Galera cluster. Prerequisites This is not a step-by-step tutorial. To use the knowledge in this article, it’s assumed that you have a basic understanding of how to set up WireGuard VPN and…


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WireGuard Mesh VPN Encryption for MariaDB Galera Cluster

2 Ways to Upgrade Ubuntu 20.04/20.10 To 21.04 (GUI & Terminal)

Ubuntu 21.04, codenamed Hirsute Hippo, is released on April 22, 2021. This tutorial is going to you 2 ways to upgrade Ubuntu 20.04/Ubuntu 20.10 to 21.04. The first method uses the graphical update manager and the second method uses command line. Usually, you use the graphical update manager to upgrade Ubuntu desktop and use the…


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2 Ways to Upgrade Ubuntu 20.04/20.10 To 21.04 (GUI & Terminal)

How to Install SuiteCRM on Ubuntu 20.04 with Apache/Nginx

This tutorial will be showing you how to install SuiteCRM on Ubuntu 20.04 with Apache or Nginx web server. SuiteCRM is a free open-source customer relationship management software solution that provides a 360-degree view of your customers and business. It’s a fork of the popular SugarCRM software because SugarCRM stopped releasing its open-source community edition…


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How to Install SuiteCRM on Ubuntu 20.04 with Apache/Nginx

How to Install MediaWiki on Ubuntu 20.04 with Apache/Nginx

This tutorial is going to show you how to install MediaWiki on Ubuntu 20.04. MediaWiki is the backend software that powers Wikipedia. It’s free open-source and the most widely used wiki software today. Well-known users of MediaWiki include Wikipedia.org and wikia.com. You can use MediaWiki to create your own private or public wiki site. MediaWiki…


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How to Install MediaWiki on Ubuntu 20.04 with Apache/Nginx

How to Install Shlink URL Shortener on Ubuntu 20.04 Server

Shlink is an open-source self-hosted URL shortener, which allows you to shorten URLs and serve them under your own short domain. Using your own URL shortner service instead of third-party service like bit.ly can increase brand awareness. This tutorial will be showing you how to install Shlink on Ubuntu 20.04 with Apache or Nginx web…


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How to Install Shlink URL Shortener on Ubuntu 20.04 Server

How to Use Clonezilla Live to Back Up Your Hard Drive

This tutorial is going to show you how to back up your entire hard drive with Clonezilla, which is a free open-source and reliable tool for bare metal backup and recovery of disk drives. Clonezilla Features You can create an image of the current disk or partition (disk imaging), and restore the image to disk…


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How to Use Clonezilla Live to Back Up Your Hard Drive

Install ProjectSend on Ubuntu 20.04 with Nginx (LEMP Stack)

This tutorial will be showing you how to install ProjectSend on Ubuntu 20.04 LTS with Nginx web server. What’s ProjectSend? ProjectSend is a free open-source self-hosted file-sharing solution. ProjectSend Features: Real-time statistics Create client groups self-registration and social login Custom E-mail templates Prerequisites ProjectSend is written in PHP programing language. To follow this tutorial, you…


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Install ProjectSend on Ubuntu 20.04 with Nginx (LEMP Stack)

How to Install the YouTube Add-on in Kodi

In a previous tutorial, we explained how you can install LibreELEC on a Raspberry Pi to set up a home media server and replace your smart TV OS. This tutorial is going to show you how to install the YouTube add-on and set up YouTube API in Kodi. Step 1: Install the YouTube Add-on in…


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How to Install the YouTube Add-on in Kodi

How to Install OSRM on Ubuntu 20.04 - Open Source Routing Machine

OSRM (Open Source Routing Machine) is a super fast routing engine for OpenStreetMap (OSM) road networks. In previous tutorials, we explained the process of setting up a self-hosted OpenStreetMap tile server and how to add address lookup functionality to your map with Nominatim. This tutorial is going to show you how to add navigation functionality…


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How to Install OSRM on Ubuntu 20.04 - Open Source Routing Machine

How to Set Up Authoritative DNS Servers with Webmin

In previous tutorials, we explained how to set up authoritative DNS servers and edit DNS records from the command line. However, some folks prefer to use a web GUI to edit DNS records. This tutorial is going to show you how to set up authoritative DNS servers with Webmin, which is a free open-source web-based…


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How to Set Up Authoritative DNS Servers with Webmin

How to Create DNS Records at Cloudflare

In my mail server tutorials, I recommend running mail server on ScalaHosting VPS, because their IP addresses are not on any blacklist. And I also recommend purchasing a domain name from NameCheap because the price is low and they give whois privacy protection free for life. It’s a good practice to buy web hosting and…


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How to Create DNS Records at Cloudflare

How to Install Webmin on CentOS 8/RHEL 8 Server

Webmin is a free and open-source control panel for administering Unix/Linux servers. This tutorial will be showing you how to install Webmin on CentOS 8/RHEL 8 server. Webmin provides users with a graphical web-based user interface to configure common system tasks and settings. If you don’t like the idea of using the command line to…


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How to Install Webmin on CentOS 8/RHEL 8 Server

How to Install Webmin on Ubuntu 20.04 Server

Webmin is a free and open-source control panel for administering Unix/Linux servers. This tutorial will be showing you how to install Webmin on Ubuntu 20.04 server. This tutorial also works on Ubuntu 20.10. Webmin provides users with a graphical web-based user interface to configure common system tasks and settings. If you don’t like the idea…


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How to Install Webmin on Ubuntu 20.04 Server

How to Fix "can't read superblock" Error on Linux (ext4 & Btrfs)

Recently my Linux desktop computer can’t mount my 5TB external hard disk drive (HDD), and the file manager displays the “can’t read superblock” error on the screen. I’m going to share with you what I did to fix the error, so if you are in the same situation, this article may help you. But before…


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How to Fix "can't read superblock" Error on Linux (ext4 & Btrfs)

How to Create a Linux VPS Server on ScalaHosting

ScalaHosting is my recommended VPS provider for running email servers. This article is going to explain how to create a Linux VPS on ScalaHosting. Run an Email Server on ScalaHosting It’s not an easy task to find a VPS provider suitable for email hosting. Many hosting companies like DigitalOcean blocks port 25. DigitalOcean would not…


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How to Create a Linux VPS Server on ScalaHosting

How to Secure Email Server Against Hacking with VPN (CentOS/RHEL)

In this tutorial, I’m going to share with you my tips and tricks to secure CentOS/RHEL email servers against hacking with a self-hosted VPN server. Many spammers are trying to hack into other people’s email servers. If successful, they would use the hacked email server to send large volumes of spam or steal valuable data.…


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How to Secure Email Server Against Hacking with VPN (CentOS/RHEL)

Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server

This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator. It will greatly improve the security of SSH service on your CentOS/RHEL server. How Two-Factor Authentication Works Usually you only need to enter a password or use SSH key to log in to your remote…


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Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server

2 Simple Steps to Set Up SSH Public Key Authentication on CentOS

This tutorial explains how to set up SSH public key authentication on a CentOS/RHEL desktop. There’re basically two ways of authenticating user login with OpenSSH server: password authentication and public key authentication. The latter is also known as passwordless SSH login because you don’t need to enter your password. Step 1: Generate SSH Public/Private Key…


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2 Simple Steps to Set Up SSH Public Key Authentication on CentOS

How to Secure Email Server Against Hacking with VPN (Debian/Ubuntu)

In this tutorial, I’m going to share with you my tips and tricks to secure email servers against hacking with a self-hosted VPN server. Many spammers are trying to hack into other people’s email servers. If successful, they would use the hacked email server to send large volumes of spam or steal valuable data. Why…


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How to Secure Email Server Against Hacking with VPN (Debian/Ubuntu)

How to Set Up ModSecurity with Nginx on Debian/Ubuntu

This tutorial is going to show you how to install and use ModSecurity with Nginx on Debian/Ubuntu servers. ModSecurity is the most well-known open-source web application firewall (WAF), providing comprehensive protection for your web applications (like WordPress, Nextcloud, Ghost etc) against a wide range of Layer 7 (HTTP) attacks, such as SQL injection, cross-site scripting,…


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How to Set Up ModSecurity with Nginx on Debian/Ubuntu

How to Set Up ModSecurity with Apache on Debian/Ubuntu

This tutorial is going to show you how to install and use ModSecurity with Apache on Debian/Ubuntu servers. ModSecurity is the most well-known open-source web application firewall (WAF), providing comprehensive protection for your web applications (like WordPress, Nextcloud, Ghost etc) against a wide range of Layer 7 (HTTP) attacks, such as SQL injection, cross-site scripting,…


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How to Set Up ModSecurity with Apache on Debian/Ubuntu