throw sae;
                            } catch (SmbException se) {
                                ex = se;
                                /* Apparently once a successfull NTLMSSP login occurs, the
                                 * server will return "Access denied" even if a logoff is
                                 * sent. Unfortunately calling disconnect() doesn't always

     * 
     */
    public enum AuthenticationType {
        /**
         * Null/anonymous authentication
         * 
         * Login with no credentials
         */
        NULL,
        /**
         * Guest authentication
         * 
         * Allows login with invalid credentials (username and/or password)
         * Fallback to anonymous authentication is permitted
         */
        GUEST,

            if ( treesess.getCredentials().isAnonymous() || treesess.getCredentials().isGuest() ) {
                // refresh anonymous session or fallback to anonymous from guest login
                try ( SmbSessionInternal s = trans
                        .getSmbSession(this.ctx.withAnonymousCredentials(), treesess.getTargetHost(), treesess.getTargetDomain())