Ssl

TLS/SSL configuration, certificate management, and HTTPS hardening.

PostfixAdmin dashboard illustration with mailboxes and aliases

May 8, 2026 • 9 min read • series

Set up PostfixAdmin on Ubuntu 26.04

Set up PostfixAdmin on Ubuntu 26.04 with Nginx, PHP, MySQL, DNS records, and a Let's Encrypt certificate for a virtual mail server.

Oct 26, 2021 • 9 min read

How to Install Odoo 15 on Ubuntu 20.04

This article explains how to install and deploy Odoo 15 inside a Python virtual environment on Ubuntu 20.04. Odoo is a popular open-source suite of business apps that help companies to manage and run their business.

Sep 30, 2021 • 8 min read

What is an SSL certificate? / SSL certificate: A Complete Insight

SSL certificate is a digital certificate issued by Certificate Authorities to the websites, which ensures all the information exchanged between the user's web browser and the webserver is encrypted.

Oct 16, 2020 • 9 min read

How to Install Odoo 14 on Ubuntu 20.04

This article explains how to install and deploy Odoo 14 inside a Python virtual environment on Ubuntu 20.04. Odoo is a popular open-source suite of business apps that help companies to manage and run their business.

Jul 20, 2020 • 5 min read

Secure Nginx with Let's Encrypt on Ubuntu 20.04

This tutorial explains how to install a free Let's Encrypt SSL certificate on Ubuntu 20.04 running Nginx as a web server. We’ll also show how to configure Nginx to use the SSL certificate and enable HTTP/2.

Let's Encrypt with Nginx on Ubuntu 20.04

Jul 20, 2020 • 5 min read • series

Secure Nginx with Let's Encrypt on Debian 10 Linux

This tutorial shows how to install a free Let's Encrypt SSL certificate on Debian 10, Buster running Nginx as a web server. We’ll also show how to configure Nginx to use the SSL certificate and enable HTTP/2.

Jul 8, 2020 • 5 min read • series

Secure Apache with Let's Encrypt on Ubuntu 20.04

In this tutorial, we'll provide a step by step instructions about how to secure your Apache with Let's Encrypt using the certbot tool on Ubuntu 20.04.

Jan 3, 2020 • 5 min read • series

Secure Apache with Let's Encrypt on Debian 10

This tutorial will guide you through the process of obtaining a free Let's Encrypt using the certbot tool on Debian 10. We'll also show how to configure Apache to use the new SSL certificate and enable HTTP/2

Dec 13, 2019 • 5 min read

Secure Nginx with Let's Encrypt on CentOS 8

In this tutorial, we'll provide a step by step instructions about how to install a free Let's Encrypt SSL certificate on CentOS 8 running Nginx as a web server. We’ll also show how to configure Nginx to use the SSL certificate and enable HTTP/2.

Oct 29, 2019 • 6 min read • series

Secure Apache with Let's Encrypt on Debian 9

This tutorial will guide you through the process of obtaining a free Let's Encrypt using the certbot tool on Debian 9. We'll also show how to configure Apache to use the new SSL certificate and enable HTTP/2

Oct 29, 2019 • 5 min read • series

Secure Apache with Let's Encrypt on CentOS 7

In this tutorial, we will cover the steps necessary to install a free Let's Encrypt SSL certificate on a CentOS 7 server running Apache as a web server.

How to use Let's Encrypt with Apache on CentOS 7

Oct 29, 2019 • 5 min read • series

Secure Apache with Let's Encrypt on Ubuntu 18.04

In this tutorial, we'll provide a step by step instructions about how to secure your Apache with Let's Encrypt using the certbot tool on Ubuntu 18.04.

Oct 28, 2019 • 6 min read • series

Secure Apache with Let's Encrypt on CentOS 8

This tutorial explains how to install a free Let's Encrypt SSL certificate on CentOS 8 running Apache as a web server. We'll use the certbot tool to obtain and renew the certificates.

How to use Let's Encrypt with Apache on CentOS 8

Oct 19, 2019 • 9 min read

How to Install Odoo 13 on Ubuntu 18.04

In this guide, we will walk you through installing and deploying Odoo 13 inside a Python virtual environment on Ubuntu 18.04. We'll download Odoo from their Github repository and using Nginx as a reverse proxy.

Jan 30, 2019 • 5 min read • series

Secure Nginx with Let's Encrypt on Debian 9

In this tutorial, we will explain how to use the Certbot tool to obtain a free SSL certificate for Nginx on Debian 9. We’ll also show how to configure Nginx to use the SSL certificate and enable HTTP/2.

Jan 26, 2019 • 5 min read • series

Secure Nginx with Let's Encrypt on CentOS 7

In this tutorial, we'll provide a step by step instructions about how to secure your Nginx with Let's Encrypt using the certbot tool on CentOS 7

How to use Let's Encrypt with Nginx on CentOS 7

Jan 21, 2019 • 3 min read

Configure Odoo with Nginx as a Reverse Proxy

Odoo comes with a built-in web server, but in most cases it is recommended to have a reverse proxy in front of it which will act as an intermediary between the clients and the Odoo server. This guide provides instructions on how to use Nginx as a reverse proxy to Odoo.

Jan 20, 2019 • 5 min read • series

Secure Nginx with Let's Encrypt on Ubuntu 18.04

Let's Encrypt is a free and open certificate authority developed by the Internet Security Research Group. In this tutorial, we'll provide a step by step instructions about how to secure your Nginx with Let's Encrypt using the certbot tool on Ubuntu 18.04

How to use Let's Encrypt with Nginx on Ubuntu 18.04

Jan 20, 2019 • 5 min read

Secure Nginx with Let's Encrypt on Ubuntu 16.04

In this tutorial, we'll provide a step by step instructions about how to secure your Nginx with Let's Encrypt using the certbot tool on Ubuntu 16.04

How to use Let's Encrypt with Nginx on Ubuntu 16.04

Oct 9, 2018 • 9 min read

How to deploy Odoo 12 on Ubuntu 18.04

This tutorial covers the steps required for installing and configuring Odoo 12 for production using Git source and Python virtual environment on an Ubuntu 18.04 system.