# documentation:2.0:authkerberos
Keywords: documentation,2.0,authkerberos

# Kerberos

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

## Presentation

Kerberos is a network authentication protocol used to authenticate users based on their desktop session.

## LLNG Configuration

In Manager, go in `General Parameters` > `Authentication modules` and choose Kerberos for authentication. Then go to “Kerberos parameters” and configure the following parameters:

- keytab file (required): the Kerberos keytab file
- Use Ajax request: set to “enabled” if you want to use an Ajax request instead of a direct Kerberos attempt. This is required if you want to chain Kerberos in a combination
- Kerberos authentication level: default to 3

### Kerberos configuration

The Kerberos configuration is quite complex. You can find some configuration tips on this page.