I\'m trying to add an Ldap authentication backend to a Django project running over GAE. The project runs ok. The only problem really is Ldap is not supported by GAE. I mean:
App Engine doesn't let you open sockets directly. Unless the LDAP server you're planning to connect to has an internet-visible HTTP front-end, you need a Plan B. (E.g., you could periodically upload extract from LDAP to your App.)
See http://code.google.com/appengine/docs/python/runtime.html#The_Sandbox