It's also nice to be able to access your own services while travelling. The operation of a publicly accessible service installed in the local network can be realised ingeniously simply with a Let's Encrypt certificate and HAProxy on the OPNsense firewall.

• Previously, this was always a complete part of a series of articles with many repetitions if the same thing also appears in other articles.
• Therefore, the complete instructions on how to create an HAProxy with a Let's Encrypt certificate using OPNsense have been moved to a separate article
• All other articles now refer to it with certain parameters that can then be used.