You can use Let's Encrypt for domains used in the internal network, but... should you?

The article on the blog discusses the use of Let's Encrypt certificates for securing internal hostnames. The author specifies that Let's Encrypt is a free SSL certificate that is particularly popular among webmasters, but using it for internal situations raises certain concerns. In the first part of the text, he focuses on legal and technical frameworks, indicating that Let's Encrypt certificates are intended primarily for public use. For internal hostnames that are not accessible on the Internet, validating them may pose significant challenges. The author emphasizes that the process of generating such certificates can be somewhat complicated and can lead to security issues if not properly managed. In conclusion, alternative solutions are provided, suggesting the use of local TLS certificates, which might be more suitable for trusted internal infrastructure. However, it is important to remember that each approach has its own pros and cons, which should be considered when deciding on the right certificate for a specific situation.