Please help me........ I have a windows network (samba domain controller which intern uses the flat file system for datastore), I wanted my j2ee web application to authenticate using NegotiateKerberos. so i followed http://wiki.jboss.org/wiki/Wiki.jsp?page=NegotiateKerberos link to setup your test application but it is not working. when i request for the index.html, i get [org.jboss.web.tomcat.security.HttpServletRequestResponseValve] Realm returned: null in the jboss server.log.... Following configurations i have done Windows network domain name is LK Samba domain controler ip 192.168.1.7 /conf/login-config.xml <!-- SPNEGO test --> <application-policy name = "SPNEGO"> <login-module code="org.jboss.security.auth.NegotiateLoginModule" flag = "required"> <module-option name="loadBalance">false</module-option> <module-option name="domainController">192.168.1.7</module-option> <module-option name="defaultDomain">LK</module-option> </login-module> </application-policy> /WEB-INF/web.xml <login-config> <auth-method>Negotiate</auth-method> <realm-name>SPNEGO</realm-name> </login-config> <security-role> <role-name>LK</role-name> </security-role> WEB-INF/jboss-web.xml <jboss-web> <security-domain>java:/jaas/SPNEGO</security-domain> </jboss-web> Thanks! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3979584#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...