# RAS Secure Gateway RAS Secure Gateway tunnels all Parallels RAS data on a single port. It also provides secure connections and is the user connection point to Parallels RAS. At least one RAS Secure Gateway must be installed and configured in every Site. Note that if a Site is joined as Tenant to RAS Tenant Broker, RAS Secure Gateway is not needed. For details, see **RAS Multi-**[**Tenant Architecture**](https://docs.parallels.com/landing/ras-admin-guide/parallels-ras-21-administrators-guide/ras-multi-tenant-architecture). Multiple gateways can exist depending on your requirements. Read this chapter to learn how to add, configure, and manage RAS Secure Gateways. --- # 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.parallels.com/landing/ras-admin-guide/parallels-ras-21-administrators-guide/ras-secure-gateway.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.