Last bind attempt timestamp

Hello,

We use OpenLDAP 2.3.27 as a user directory for our application. Now I need to keep track of directory user bind activities. More precisely I need to be able to get timestamp of last bind attempt for particular entry.

Is such a thing possible in OpenLDAP? Does it record bind attempts somehow?

My personal solution options are the following: 1) create attribute for last bind timestamp and fill it programmatically from the application 2) use slapo-accesslog(5) overlay, since there is a possibility to log bind operations in separate database

But maybe nevertheless there is some already existing entry attribute with such a timestamp?

Thanks in advance! Alina.