> For AI agents: the complete documentation index is available at https://www.jumpserver.com/docs/v4/llms.txt, the full documentation bundle is available at https://www.jumpserver.com/docs/v4/llms-full.txt.

# Integrate RADIUS authentication 
## About RADIUS

**Remote authentication Dial-In User Service (RADIUS)** is a remote authentication mechanism based on the RADIUS protocol, primarily used for network access control. It provides Authentication, Authorization, and Accounting (AAA) functionalities.

## How to configure


1

In the right area of the top navigation bar, click .

![image](/docs/images/docs/navs/nav-settings.png)

2

Navigate to the **System settings > Authentication > Radius**.

3

In the **Radius** field, check to enable RADIUS authentication.

4

In the **Host** field, type the RADIUS server IP address or domain name, such as "172.16.10.180".

5

In the **Port** field, type the RADIUS server port number. The default is "1812".

6

In the **Secret** field, type the shared secret key between the JumpServer and the RADIUS server. It functions like a password, encrypting sensitive information in RADIUS requests and responses to ensure secure communication.

7

Optionally, in the **OTP in RADIUS** field, check to enable RADIUS as the MFA backend. For more information, see [Enable RADIUS MFA backend](https://www.jumpserver.com/docs/v4/authentication/radius.md#enable-radius-mfa-backend).

8

In the **Organization** field, after authentication and creation, the user will be added to the selected organization.

9

Click **Submit**.

## Enable RADIUS MFA backend

This subsection describes how to configure RADIUS authentication as one of the MFA backends.


1

Configure RADIUS authentication by following the [Integrate RADIUS authentication](https://www.jumpserver.com/docs/v4/authentication/radius.md#how-to-configure) guide.

2

In the **OTP in RADIUS** field, check to enable RADIUS as the MFA backend.
When a user’s MFA is enabled, they can choose RADIUS authentication type during login.
![image](/images/v4/admin-guides/system-settings/auth/radius-mfa.png)

3

Click **Submit**.