/** Whether to use NT SMB operations */
    protected boolean useNTSmbs = true;
    /** Whether to use large read/write operations for better performance */
    protected boolean useLargeReadWrite = true;
    /** LAN Manager compatibility level for authentication */
    protected int lanmanCompatibility = 3;
    /** Whether to allow fallback to NTLM authentication */
    protected boolean allowNTLMFallback = true;

    /** Native operating system name */
    String NATIVE_OS = Config.getProperty("jcifs.smb1.smb.client.nativeOs", System.getProperty("os.name"));
    /** Native LAN manager name */
    String NATIVE_LANMAN = Config.getProperty("jcifs.smb1.smb.client.nativeLanMan", "jCIFS");
    /** Virtual circuit number */
    int VC_NUMBER = 1;
    /** Null transport instance */