It's possible. Look for System.DirectoryServices namespace. You can use older Provider approach too if you just want to read data. The situation with AD is very personal and depends on what you need in your case.

All that being said, I really would like to improve the LDAP story with YAF.NET. At least have a "Startkit" for it -- honestly I haven't even been able to get it working.

It can be added as an experimental feature. I will add some classes and they can be used on top of
Forms authentication. You can add a page (for host) and there will be a possibility to experiment with functionality in real environement and will be a test feature too.
This will be enough to play around and find variants fitting to YAF.

It can be added as an experimental feature. I will add some classes and they can be used on top of
Forms authentication. You can add a page (for host) and there will be a possibility to experiment with functionality in real environement and will be a test feature too.
This will be enough to play around and find variants fitting to YAF.