protected int writeParameterWordsWireFormat ( byte[] dst, int dstIndex ) {
        if ( this.server.security == SmbConstants.SECURITY_SHARE && this.ctx.getCredentials() instanceof NtlmPasswordAuthenticator ) {
            NtlmPasswordAuthenticator pwAuth = (NtlmPasswordAuthenticator) this.ctx.getCredentials();
            if ( isExternalAuth(pwAuth) ) {
                this.passwordLength = 1;
            }