Ftp Error Code 502
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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 ftp error codes a scenario where you have a client workstation behind Forefront TMG 2010
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and you are trying to download files from a FTP Server. You are successfully able to logon on ftp return codes mainframe the FTP but after type the command “dir” you get the error message below: The message is pretty clear about what is going on, isn’t it? Well, it is ftp error 500 but where do I enable this option? I 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
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fine. It is important to mention that this setting has nothing 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.VendorParametersSet
good, bad or incomplete: Range Purpose 1xx Positive Preliminary reply The requested action is being initiated; expect another reply before proceeding with a new command. (The user-process sending another ftp error 421 command before the completion reply would be in violation of protocol; but server-FTP ftp error 421 service not available processes should queue any commands that arrive while a preceding command is in progress.) This type of reply can be
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used to indicate that the command was accepted and the user-process may now pay attention to the data connections, for implementations where simultaneous monitoring is difficult. The server-FTP process may send at 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/ most, one 1xx reply per command. 2xx Positive Completion reply The requested action has been successfully completed. A new request may be initiated. 3xx Positive Intermediate reply The command has been accepted, but the requested action is being held in abeyance, pending receipt of further information. The user should send another command specifying this information. This reply is used in command sequence groups. 4xx Transient Negative https://en.wikipedia.org/wiki/List_of_FTP_server_return_codes Completion reply The command was not accepted and the requested action did not take place, but the error condition is temporary and the action may be requested again. The user should return to the beginning of the command sequence, if any. It is difficult to assign a meaning to "transient", particularly when two distinct sites (Server- and User-processes) have to agree on the interpretation. Each reply in the 4xx category might have a slightly different time value, but the intent is that the user-process is encouraged to try again. A rule of thumb in determining if a reply fits into the 4xx or the 5xx (Permanent Negative) category is that replies are 4xx if the commands can be repeated without any change in command form or in properties of the User or Server (e.g., the command is spelled the same with the same arguments used; the user does not change his file access or user name; the server does not put up a new implementation.) 5xx Permanent Negative Completion reply The command was not accepted and the requested action did not take place. The User-process is discouraged from repeating the exact request (in the same sequ
| Address Book | Member List | Search | FAQ | Ticket List | Log Out Error Code 502 Proxy Error FTP Login Denied Users viewing this topic: none http://forums.isaserver.org/Error_Code_502_Proxy_Error_FTP_Login_Denied/m_270024600/tm.htm Logged in as: Guest Tree Style Printable Version All Forums >> [ISA Server 2004 Firewall] >> Firewall Client >> Error Code 502 Proxy Error FTP Login Denied Page: [1] Login Message << https://www.smartftp.com/support/kb/ftp-server-return-codes-and-errors-f41.html Older Topic Newer Topic >> Error Code 502 Proxy Error FTP Login Denied - 16.Mar.2005 6:53:00 PM mnowacz Posts: 5 Joined: 16.Mar.2005 Status: offline When a user tries to go to a ftp error certain FTP site to register their software, they get the Error Code 502 Proxy Error The login request was denied.If we try to go to the FTP site from the server, you receive the login screen at the FTP site. If we try it from a client, the clients get the error message.Any assistance would be appreciated. Post #: 1 Featured Links* RE: Error Code 502 Proxy ftp error code Error FTP Login Denied - 17.Mar.2005 12:45:00 AM tshinder Posts: 50013 Joined: 10.Jan.2001 From: Texas Status: offline Hi Mark,What FTP site?Thanks!Tom (in reply to mnowacz) Post #: 2 RE: Error Code 502 Proxy Error FTP Login Denied - 17.Mar.2005 2:03:00 PM mnowacz Posts: 5 Joined: 16.Mar.2005 Status: offline quote:Originally posted by tshinder:Hi Mark,What FTP site?Thanks!Tom (in reply to mnowacz) Post #: 3 RE: Error Code 502 Proxy Error FTP Login Denied - 17.Mar.2005 2:04:00 PM mnowacz Posts: 5 Joined: 16.Mar.2005 Status: offline quote:Originally posted by Mark Nowaczyk: quote:Originally posted by tshinder:Hi Mark,What FTP site?Thanks!TomTom:The site is as follows:ftp:\\ftp.waz6.registeredsite.comThis is a site which our Contribute software for web page editing needs to connect to before we can use the software.ThanksMark (in reply to mnowacz) Post #: 4 RE: Error Code 502 Proxy Error FTP Login Denied - 23.Mar.2005 7:29:00 PM bbaxter51 Posts: 19 Joined: 20.Jan.2005 From: Minneapolis Status: offline The ftp problem with isa 04 is a known issue and microsoft has released a hotfix for it. it's super easy to install and works like a charm, you just have to call them to get it. here's the link to the article.http://support.microsoft.c
> Server Errors > FTP Server Return Codes and Errors Created 13 Apr 2002 Modified 22 Nov 2002 Print Article Article 41 FTP Server Return Codes and Errors 110 Restart marker reply. In this case, the text is exact and not left to the particular implementation; it must read: MARK yyyy = mmmm where yyyy is User-process data stream marker, and mmmm server's equivalent marker (note the spaces between markers and "="). 120 Service ready in nnn minutes. 125 Data connection already open; transfer starting. 150 File status okay; about to open data connection. 200 Command okay. 202 Command not implemented, superfluous at this site. 211 System status, or system help reply. 212 Directory status. 213 File status. 214 Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user. 215 NAME system type.Where NAME is an official system name from the list in the Assigned Numbers document. 220 Service ready for new user. 221 Service closing control connection. 225 Data connection open; no transfer in progress. 226 Closing data connection. Requested file action successful (for example, file transfer or file abort). 227 Entering Passive Mode (h1,h2,h3,h4,p1,p2). 230 User logged in, proceed. Logged out if appropriate. 250 Requested file action okay, completed. 257 "PATHNAME" created. 331 User name okay, need password. 332 Need account for login. 350 Requested file action pending further information 421 Service not available, closing control connection. This may be a reply to any command if the service knows it must shut down. 425 Can't open data connection. 426 Connection closed; transfer aborted. 450 Requested file action not taken. 451 Requested action aborted. Local error in processing. 452 Requested action not taken. Insufficient storage space in system.File unavailable (e.g., file busy) 500 Syntax error, command unrecognized. This may include errors such as command line too long. 501 Syntax error in parameters or arguments. 502 Command not implemented. 503 Bad sequence of commands. 504 Comm