Today, I pushed a branch to my fork of authlogic_example: with-activeldap. This branch shows a way of implementing pass-through authentication to an LDAP server using ActiveLdap and Authlogic, with just some small changes to the User and UserSession models. First, we’ll need to bring in the net-ldap and activeldap gems. We edit config/environment.rb to include the following two lines: config.gem "