xACLs
Using more secure password format
When you enter an Internet password and save the Person document, Domino automatically one-way hashes the Internet password field. To improve the default password, use the more secure password format.
Using Internet password lockout
Internet password lockout lets administrators set a threshold value for Internet password authentication failures for Domino Web and Domino Web Access users.
Using xACLs to secure Internet passwords
One way to secure Internet passwords is to use Extended ACLs, or xACLs, to control access based on levels in the naming hierarchy, and at the form and field level. For passwords stored in the Domino Directory, administrators can set up xACLs to limit access to Internet passwords to the users themselves, for accessing their own passwords, and to administrators, for allowing administrative changes to passwords.