---
title: RADIUS authentication
description: To configure the AltoReach device to use RADIUS authentication
---

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# RADIUS authentication

To configure the AltoReach device to use RADIUS authentication:

1. Log into the AltoReach device as described in [Connect to the AltoReach device](https://support.altowav.com/connect-to-the-altoreach-device.html?hsLang=en-us).
2. In the WebUI, click **Authentication**.
3. For **Web UI login authentication method**, select **RADIUS authetication**.
4. For **RADIUS auth server**, type the IP address or fully qualified domain name of the RADIUS server.
5. For **RADIUS auth port**, type the port that the RADIUS server listens on. The default is 1812.
6. For **RADIUS auth shared secret**, type the shared secret used to authenticate to the RADIUS server.
7. Click **Save Now**.

![](https://support.altowav.com/hs-fs/hubfs/kb-images/altoreach-radios/auth-RADIUS-server-config_278b0391.png?width=577&height=454&name=auth-RADIUS-server-config_278b0391.png)

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