if ( !this.getConfig().isAllowGuestFallback() && response.isLoggedInAsGuest()
                        && ! ( this.credentials.isGuest() || this.credentials.isAnonymous() ) ) {
                    throw new SmbAuthException(NtStatus.NT_STATUS_LOGON_FAILURE);
                }
                else if ( !this.credentials.isAnonymous() && response.isLoggedInAsGuest() ) {
                    anonymous = true;
                }