title: Apache/Tomcat - LDAP Authentication based on AD Group Membership
body: <p>We currently have an Apache/Tomcat (5.5) application running and we're using the LDAP authentication feature (by configuring the realm) against a multi domain structure and it's working great.  One thing we would like to do is limit access to users based on their membership on a specific group in AD.  Basically, only users of GroupA will be alowed to access the app.  I'm wondering if this type of configuration is possible.  If so, can you point me in the right direction?  Thanks in advance.</p>