HP-UX Directory Server Administrator Guide HP-UX Directory Server Version 8.1 (5900-3098, May 2013)

A new ACI keyword minssf allows you to set access control based on how secure the connection
is.
Consider the following example for ACI that requires a SSF of 56 for you to modify your password:
aci: (targetattr="userPassword")(version 3.0; acl "
Require secure password changes"; allow (write) userdn="ldap:///self" and ssf>="56";)
498 Managing SSL