The file realm is the default realm when you first install Sun Java System Web Server, and has the following configuration characteristics:
Name: file
Classname: com.iplanet.ias.security.auth.realm.file.FileRealm
Required properties are as follows:
file: The name of the file that stores user information. By default this file is instance_dir/config/keyfile.
jaas-context: The value must be fileRealm.
The user information file is initially empty, so you must add users before you can use the file realm.