**Before 7.2:**
Yes this is possible, but unfortunately not configurable by the Administration UI by now.
The following Steps are needed if you do it by Admin UI and Database Editor:
1. Configure the additional properties by using the Administration UI and add them to the User Properties ![Edit User Properties][1]
2. Stop the Ivy Server/Engine
3. Open a Database Editor and go to table IWA_ApplicationProperty
4. Change the `PropertyName` from `JndiAAA.UsrAttr.yourAdditionAttributeKey` to `JndiAAA.AddEnv.yourAdditionAttributeKey` (e.g. `JndiAAA.UsrAttr.java.naming.referral` to `JndiAAA.AddEnv.java.naming.referral`)
5. Start the Ivy Server/Engine, the additional attributes are now used
[1]: /upfiles/edit_user-proeprties_for_external_security_system_1.png
