Let’s Encrypt is an awesome open certificate authority that give digital certificates for free. The introduction of Let’s Encrypt had given ordinary folks like me the ability to host their own website that browsers will mark as secured – without paying hefty fees. Matching Let’s Encrypt with Raspberry Pi, we can easily deploy secure applications at home to serve clients anytime, anywhere.
The issuance of digital certificates is automated by software using the ACME protocol. We will need to run such a software on the devices which are going to serve as web hosts which speak HTTPS. Let’s Encrypt recommends that people with shell access use the Certbot ACME client to request for Let’s Encrypt certificates.
Since I had recently setup a reverse proxy server with nginx, Raspbian Jessie Lite and Raspberry Pi 3 with the shell terminal, I continue on to install Certbot on the Raspbian Jessie Lite operating system for deploying Let’s Encrypt certificates for my reverse proxy server to serve HTTPS traffic on behalf of future upstream servers.