# Traefik With Helmut4 v4.12 the internal reverse proxy has been upgraded to Traefik v3.x, which now only supports modern encryption standards (TLS 1.2 and TLS 1.3). As a result, any load balancer or reverse proxy placed in front of a Helmut4 system must also support TLS 1.2 or newer. Older protocols such as TLS 1.0 and TLS 1.1 are no longer accepted and connections using them will be rejected. For reference: TLS 1.0 (1999) and TLS 1.1 (2006) are considered obsolete and have been deprecated across the industry for several years due to security weaknesses. TLS 1.2 (2008) and TLS 1.3 (2018) are the current secure standards and are supported by all modern operating systems and browsers. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.helmut.de/helmut4-releases/getting-started/additional-configurations/communication-ssl-proxy-and-ports/traefik.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.