Ftp 502 Error
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trying to list files in a FTP session behind Forefront TMG 2010 ★★★★★★★★★★★★★★★ Yuri Diogenes [MSFT]March 16, 201014 0 0 0 Consider a scenario where you ftp error codes have a client workstation behind Forefront TMG 2010 and you are trying to
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download files from a FTP Server. You are successfully able to logon on the FTP but after type the
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command “dir” you get the error message below: The message is pretty clear about what is going on, isn’t it? Well, it is but where do I enable this option? I
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don’t remember having this on ISA!! To address this issue you just need to enable a new option that we have on TMG, this option is located on the FTP Filter properties as shown below: After enabling this option and apply the changes you should be able to list your files just fine. It is important to mention that this setting has nothing ftp error 421 to do with the FTP Read Only option, that you had in ISA 2004/2006 and still have it on TMG. The FTP Filter when running in read only mode (see figure below) will blocks all commands in the control channel except the following ones: “ABOR, ACCT, CDUP, CWD /0, FEAT, HELP, LANG, LIST, MODE, NLST, NOOP, PASS, PASV, PORT, PWD /0, QUIT, REIN, REST, RETR, SITE, STRU, SYST, TYPE, USER, XDUP, XCWD, XPWD, SMNT” You can customize this list by using the sample script below (from Configuring Add-ins MSDN article),in this example the script configures FTP Access Filter to allow only the USER and PASS commands: Dim root Dim ftpFilter Dim vpSet On Error Resume Next Err.Clear Set root = CreateObject("FPC.Root") ‘ Get the filter's administration object Set ftpFilter = root.GetContainingArray.Extensions.ApplicationFilters("{680A928F-22B3-11d1-B026-0000F87750CB}") If ftpFilter Is Nothing Then Wscript.Echo "FTP Access Filter ({680A928F-22B3-11D1-B026-0000F87750CB}) is not installed in array." WScript.Quit End If ‘ Get the vendor parameter set containing the filter's configuration. Set vpSet = ftpFilter.VendorParametersSets.Item("{680A928F-22B3-11D1-B026-0000F87750CB}") ‘If this vendor parameters set does not exist, create it. If vpSet Is Nothing Then WScript.Echo "Adding a vendor parameters set ({680A928F-22B3-11D1-B026-0000F87750CB})
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about ftp error 421 service not available Stack Overflow the company Business Learn more about hiring developers or posting ads with ftp 530 us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a ftp error 550 failed to open file community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error: (502) Command not implemented. Using FtpWebResponse .net up vote 0 down vote favorite Aright, https://blogs.technet.microsoft.com/yuridiogenes/2010/03/16/error-502-active-ftp-not-allowed-when-trying-to-list-files-in-a-ftp-session-behind-forefront-tmg-2010/ so here's how it goes I'm trying to set a up a polling system to pull log files from several laser systems each with their own ftp. However, I'm running into difficulty when attempting to call the FtpWebResponse call to download the log file the following is the code I'm using: // Get the object used to communicate with the server. FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://192.168.10.140/param.dat"); request.Method = WebRequestMethods.Ftp.DownloadFile; request.Credentials = http://stackoverflow.com/questions/17306890/error-502-command-not-implemented-using-ftpwebresponse-net new NetworkCredential("user", "pass"); request.UsePassive = false; request.Proxy = null; request.UseBinary = true; FtpWebResponse response = (FtpWebResponse)request.GetResponse(); So I freeze up on that last line with: "The remote server returned an error: (502) Command not implemented." I've a few different ways to grab files from the system just to see if it's some kind of setting I'm missing this is my results: Microsoft CMD.exe: Connects up fine and can download files and perform standard ftp commands Internet Explorer: Entering in address to file it downloads the file just fine Firefox: "The remote server returned an error: (502) Command not implemented." Chrome: "Error 606 (net::ERR_FTP_COMMAND_NOT_SUPPORTED): Unknown error." Now there's not a lot of information I can get on the actual ftp set-up on the laser systems due to a long story I wont get into here but from what I'm seeing perhaps it uses some kind of legacy protocol that IE and CMD support or I'm missing something obvious. I've attempted flipping around the FtpWebRequest setting but nothing seems to work. I would really love to use this solution and not have the program auto build ftp batch files as it would really just make be sad as having everything run in program would be so much more elegant and easier t