Web Portal: How to deactivate standard login?

We are newbies in Spring MVC (Spring-Security) and in Web Portal development and we need to deactivate the user login standard mechanism at the beginning of the web portal start.

Any idea would be very appreciated.

Thanks in advance.

We’ve just modified portal-security-spring.xml to grant access to all users and then the access is anonymous for every one:

    <intercept-url pattern="/**" access="permitAll"/>