* @param name
     * @param targetHost
     * @param targetDomain
     * @param rn
     * @return dfs referral
     * @throws SmbException
     * @throws CIFSException
     */
    DfsReferralData getDfsReferrals ( CIFSContext ctx, String name, String targetHost, String targetDomain, int rn ) throws CIFSException;


    /**
     * @return whether signatures are supported but not required
     * @throws SmbException
     */