For several aspects of the ESP GUI application, the application will have to have an associated user, which will, in turn, belongs to specifics groups. The reason for this is that we do not want the application to allow any user to do all things in the ESP GUI. For example:

1. Maybe you want to limit users to read-only.
2. Certain users can create mission scripts for certain ESP instrument
3. Certain users can delete deployment information.
4. etc.

In order to enable this type of access control, the Java SE security infrastructure was utilized in the GUI development.

Resources:

1. Java SE Security
2. Java SE Security Overview
3. JAAS Authentication Tutorial
4. JAAS Authorization Tutorial
5. JAAS Reference Guide