# documentation:2.0:authradius
Keywords: documentation,2.0,authradius

# Radius

Authentication | Users | Password
--- | --- | ---
✔ |  |

## Presentation

LL::NG uses Perl Authen::Radius as a simple authentication backend.

Currently, the module is simply handling a Radius Authentication request and has been tested only against a FreeRadius server.

## Configuration

### Install Authen::Radius

You have to install the corresponding Perl module.

For CentOS/RHEL:

    yum install perl-Authen-Radius

In Debian/Ubuntu, install the library through apt-get command

    apt-get install libauthen-radius-perl

### Configuration of LemonLDAP::NG

In Manager, go in `General Parameters` > `Authentication modules` and choose Radius for authentication.

You can then choose any other module for users and password.

Then, go in `Radius parameters`:

- Authentication level: authentication level for Radius module
- Shared secret: this is the passphrase to use to connect to the Radius server
- Server hostname: this is the hostname or IP address of the Radius server