In this guide, we’ll learn how to install Let’s Encrypt on Debian 13. Let’s Encrypt is a non-profit certificate authority that provides free, automated OpenSSL/TLS certificates for websites to enable HTTPS encryption. HTTPS encryption is a security protocol that encrypts data exchanged between the browser and the website (server). A secure connection is necessary to protect sensitive information and ensure the privacy and integrity of data. Let’s Encrypt SSL certificates are valid for 90 days to encourage automation and limit damage if a key is compromised. For Let’s Encrypt to be installed on a domain, the domain must be valid and point to a server IP address; otherwise, the installation will fail.
Installing Let’s Encrypt is a straightforward process that can take less than a minute. Before that, however, there are some prerequisites that must be met, which will be explained in the following paragraphs. Let’s install Let’s Encrypt on Debian 13!
