[keycloak-user] How to secure the application's root

Hi, if I want to secure the root directory, namely, when I visit http://localhost:8080/myapp, then it redirects me to the keycloak login page, asking for credentials. How to achieve that? I modified the Web.xml as follows, but it doesn't secure anything at all. I thought this should work "<url-pattern>/*</url-pattern>", but it doesn't. <!-- <security-constraint> <web-resource-collection> <web-resource-name>Admins</web-resource-name> <url-pattern>/admin/*</url-pattern> </web-resource-collection> <auth-constraint> <role-name>admin</role-name> </auth-constraint> </security-constraint> <security-constraint> <web-resource-collection> <web-resource-name>Login</web-resource-name> <url-pattern>/login2/*</url-pattern> </web-resource-collection> <auth-constraint> <role-name>user</role-name> </auth-constraint> </security-constraint> --> <security-constraint> <web-resource-collection> <web-resource-name>Web Root</web-resource-name> <url-pattern>/*</url-pattern> </web-resource-collection> <!-- <user-data-constraint> <transport-guarantee>CONFIDENTIAL</transport-guarantee> </user-data-constraint> --> </security-constraint> <login-config> <auth-method>KEYCLOAK</auth-method> <realm-name>bword</realm-name> </login-config>