Bind as Kirsten Vaughan (for example).
$ ldapsearch -h localhost -p 1389 -b "dc=example,dc=com" \ -D "uid=kvaughan,ou=people,dc=example,dc=com" -w bribery "(uid=*)"
Search instance-path/logs/errors for the resulting message from the testpreop_bind() function.
If you ignore housekeeping information for the entry, output similar to this appears:
Target DN: uid=kvaughan,ou=people,dc=example,dc=com Authentication method: Simple authentication
For a discussion of less trivial pre-bind plug-in functions, refer to Chapter 6, Handling Authentication Using Plug-Ins.