Its not in eZ by default, but the rule of thumb is, if you can do it in PHP you can do it in eZ using an extension. Now you may have to do it yourself, but you can do it.
Tony Wood : twitter.com/tonywood
Vision with Technology
Experts in eZ Publish consulting & development
I work at Telemark University College (http://www.hit.no).
We plan to implement eZ publish 3 at our site. We have about 500 employees and 4500 students. LDAP-support is very important for us when implementing new IT-systems.
Today we ordered eZ systems to code an LDAP-extension for eZ publish 3. It will be made general and configurable.
We love the open-source-philosofy, so we will make this extension available for everybody.
