Introduction:

When you’re sending data through a web application/website if the transaction is not encrypted anyone with enough technical knowledge can interpret the transaction and steal any confidential information in it.

To address this problem with web technologies a new version of the HTTP protocol was introduced. It was called HTTPS ( Hypertext Transfer Protocol Secure). Any service using this protocol can encrypt its data end to end.

But to encrypt the data we need to buy an SSL certificate from a private organisation. There are a few open-source organisations that provide free SSL certificates one of them is Lets Encrypt. In this tutorial, we are going to use the Let’s encrypt service to install a free SSL certificate.

Flow Diagram:

Prerequisites:

• Ubuntu server with Nginx setup

• Domain configure with Nginx as the default site or virtual host

• Map ubuntu server public IP to domain name DNS

Steps:

Step 1: Install snapd

• Update ubuntu apt repository list

• Install snapd

Step 2: Install Certbot

• install certbot using snap

• Prepare the Certbot command

Step 3: Install SSL Certificate for Nginx

<email_id> = your email which associate with the SSL Certificate

<domain_name> = Respective domain name to install SSL Certificate ( eg: episyche.com )

Result:

Visit your domain with a browser, now you see an additional lock symbol at the address bar and HTTPS protocol added to your domain name.

An example output screenshot is given below: