I've released version 0.1 of the Spring Security Kerberos plugin. This adds support for single sign-on using Kerberos.
I haven't extensively tested the plugin but have verified that it works fine with MIT Kerberos. It should work well with Microsoft Active Directory, and other compliant Kerberos implementations. The plugin uses the Kerberos/SPNEGO Spring Security extension (
http://static.springsource.org/spring-security/site/extensions.html) and the information in this introductory blog post should be useful background and configuration information (in addition to the plugin docs):
http://blog.springsource.com/2009/09/28/spring-security-kerberos/This is an official Grails plugin, so the code is hosted at
https://github.com/grails-plugins/grails-spring-security-kerberosThe standard wiki page is at
http://grails.org/plugin/spring-security-kerberos but the documentation is at
http://grails-plugins.github.com/grails-spring-security-kerberos/Feedback, suggestions for improvement and contributions are always welcome. Please report any bugs or feature requests on the user list or in JIRA at
http://jira.codehaus.org/browse/GRAILSPLUGINS under the 'Grails-Spring-Security-Kerberos' component.
Burt