FtpWebRequest Error: The remote server returned an error: 227 Entering passive mode

Error Occured - The remote server returned an error: 227 Entering passive mode (190,100,100,31,210,69)

            string fileName = (sender as LinkButton).CommandArgument;
            string ftp = "ftp://190.100.100.31/";
            string ftpFolder = "usr/Log/";
            try
            {
                //Create FTP Request.
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftp + ftpFolder + fileName);
                request.Method = WebRequestMethods.Ftp.DownloadFile;

                //Enter FTP Server credentials.
                request.Credentials = new NetworkCredential("Administrator", "1234");
                request.UsePassive = true;
                request.UseBinary = true;
                request.EnableSsl = false;
                request.UsePassive = true;

                //Fetch the Response and read it into a MemoryStream object.
                FtpWebResponse response = (FtpWebResponse)request.GetResponse();
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (Stream fileStream = new FileStream(@"c:\UserName\File\" + fileName, FileMode.CreateNew))
                    {
                        responseStream.CopyTo(fileStream);
                    }
                }
            }
            catch (WebException ex)
            {
                throw new Exception((ex.Response as FtpWebResponse).StatusDescription);
            }