Jaas authentication

Hello,
I'm trying to create a client-server authentication with JAAS (and
LDAP).
My problem is that authentication with LDAP it's ok but JavaEE Server
don't recognize logged user.

This is client fragment code:
            System.setProperty("java.security.auth.login.config", "src/
conf/jaas.conf");
            LoginCallbackHandler("user.0","secret"));
            lc.login();

            Context ic = new InitialContext();
            AutoreRemote foo = (AutoreRemote) ic.lookup("AutoreBean");
            System.out.println("Return Message: "+foo.getAutore());

This is server fragment code:
@Stateless
public class AutoreBean implements AutoreRemote {
    @Resource SessionContext sc;
    public String getAutore() {
            Principal caller = sc.getCallerPrincipal();
            return caller.getName();
    }
}

This is the system output
                [LdapLoginModule] authentication-only mode; SSL
disabled
                [LdapLoginModule] user provider: ldap://localhost:1389/
                [LdapLoginModule] attempting to authenticate user:
user.0
                [LdapLoginModule] authentication succeeded
                [LdapLoginModule] added LdapPrincipal "uid=user.
0,ou=People,dc=example,dc=com" to Subject
                [LdapLoginModule] added UserPrincipal "user.0" to
Subject
Return Message: ANONYMOUS

Why it reply with Principal ANONYMOUS?

Thank you in advice.
Michele