> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-admin-guide/v21-de-de/mandantenfaehige-architektur-des-ras/bereitstellung-von-mandantenmakler-und-mandanten/benutzerauthentifizierung.md).

# Benutzerauthentifizierung

Die Benutzerauthentifizierung in der mandantenfähigen RAS-Architektur wird durch den RAS Connection Broker durchgeführt, der in der Mandantenfarm läuft. Der Connection Broker wird nach dem Zufallsprinzip von einem gemeinsam genutzten RAS Secure Gateways ausgewählt. Wenn der Connection Broker nicht verfügbar ist, wird er entsprechend markiert, und es wird für einen bestimmten Zeitraum keine Kommunikation mit ihm über dasselbe gemeinsame Gateway durchgeführt. Das Gateway überprüft den Status des Connection Broker regelmäßig und nimmt die Kommunikation wieder auf, sobald der Agent verfügbar ist.


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