# Kerberos Authentication
Device Management > Configuration > Device Settings > Kerberos Authentication

Select the Kerberos realm for user authentication.

Note

- The Kerberos realm specified here cannot be used with SMTP authentication.
- Settings on this page can be changed by the following administrator:
  - Machine Administrator

### Encryption Algorithm

Select the key lengths of the encryption algorithms to use for Kerberos authentication.

## Realm 1 to 5

### Realm Name

Enter the realm name using up to 64 characters.

Note

- You must enter a realm name.

### KDC Server Name

Enter the KDC (Key Distribution Center) server name by specifying its FQDN (Fully Qualified Domain Name) or IP address. You can enter up to 64 characters.

### Domain Name

Enter the name of the domain that corresponds to the Kerberos realm.

## Buttons

### Refresh

Click to update the currently displayed information.

Note

- Before making the settings, click Refresh to obtain the machine's current status.

### OK

Click to apply the settings.

### Cancel

Click to cancel the settings.

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