ssn.auth = auth;
                return ssn;
            }
        }

        /* logoff old sessions */
        if (SO_TIMEOUT > 0 && sessionExpiration < (now = System.currentTimeMillis())) {
            sessionExpiration = now + SO_TIMEOUT;
            iter = sessions.listIterator();
            while (iter.hasNext()) {
                ssn = (SmbSession) iter.next();