Chapter 12. Implementing Account Lockout & Notification

OpenDJ directory server supports automatic account lockout. The aim of account lockout is not to punish users who mistype their passwords, but instead to protect the directory against attacks in which the attacker attempts to guess a user password, repeatedly attempting to bind until success is achieved.

Account lockout disables a user account after a specified number of successive authentication failures. When you implement account lockout, you can opt to have OpenDJ directory server unlock the account again after a specified interval, or you can leave the account locked until the password is reset.

[Note] Note

When you configure account lockout as part of password policy, OpenDJ locks an account after the specified number of consecutive authentication failures. Account lockout is not transactional across a replication topology, however. Under normal circumstances, replication nevertheless propagates lockout quickly. If ever replication is delayed, an attacker with direct access to multiple replicas could try to authenticate up to the specified number of times on each replica before being locked out on all replicas.

This chapter shows you how to set up account lockout policies, and how to intervene manually to lock and unlock accounts.