Hi,
I got it fixed by modifying the following configurations:
sun-web.xml
--------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 Servlet 2.5//EN" "
http://www.sun.com/software/appserver/dtds/sun-web-app_2_5-0.dtd">
<sun-web-app error-url="">
<context-root>/webJaas</context-root>
<security-role-mapping>
<role-name>admin</role-name>
<group-name>admin</group-name>
<group-name>users</group-name>
</security-role-mapping>
<class-loader delegate="true"/>
<jsp-config>
<property name="keepgenerated" value="true">
<description>Keep a copy of the generated servlet class' java code.</description>
</property>
</jsp-config>
</sun-web-app>
web.xml:
-----------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="
http://java.sun.com/xml/ns/j2ee" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<security-constraint>
<display-name>Admin</display-name>
<web-resource-collection>
<web-resource-name>all</web-resource-name>
<description/>
<url-pattern>/admin/*</url-pattern>
<http-method>GET</http-method>
<http-method>POST</http-method>
<http-method>HEAD</http-method>
<http-method>PUT</http-method>
<http-method>OPTIONS</http-method>
<http-method>TRACE</http-method>
<http-method>DELETE</http-method>
</web-resource-collection>
<auth-constraint>
<description/>
<role-name>admin</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>FORM</auth-method>
<realm-name>MyRealm</realm-name>
<form-login-config>
<form-login-page>/login.jsp</form-login-page>
<form-error-page>/login.jsp</form-error-page>
</form-login-config>
</login-config>
<security-role>
<description/>
<role-name>admin</role-name>
</security-role>
</web-app>
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