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Solution 2: The network administrator of the server network can consult the firewall vendor's documentation to see if FTP connections can be dynamically monitored and ports dynamically opened when a passive Was this answer helpful? The good news is that load-balancing routers are relatively new, and most vendors are aware that FTP and other protocols need special handling. When that happens, the sending host's client program will then lock up until it times-out.

Thanks in advance martin [View user's profile] Site Admin Joined: 2002-12-10 Posts: 24665 Location: Prague, Czechia Posted: 2014-04-03 Re: Getting timeout error while connecting using ftp [Reply with quote] Please attach For example, NcFTPd Server has an option to let you specify an IP address to use for PASV replies rather than the real IP address of the machine. Mysteriously, the implementers chose to specify in the FTP specification that PORT should be preferred and PASV need not be implemented at all by FTP client programs. Knowledgebase Portal Home Knowledgebase Categories Domain Registration & DNS 9 Email Services 18 Frequently Asked Questions & Troubleshooting 5 Getting Started 15 Sales and Billing

The most common instance of this problem occurs comes into play during a long file transfer. As long as one side of the FTP session enables Keep Alive and has the heartbeat timer configured to a sensible value, this problem should be solved. Client: QUIT Server: 221 Goodbye. The first example is an Active session that logs in anonymously and does a single active data transfer, a directory listing.

Because a server response from PASV includes an IP address and port number, if this IP address corresponds to a private network then the client will not be able to connect Those and other nuances taken together can take a few tries before you get through, even when the route is correct and traffic is light. In any case, here is the path: /var/www/cpx.Thanks in advance for your help! The general solution for this problem is that the routing device needs to special-case the FTP protocol, and when there is activity on a FTP session's data connection, it must mark

Client: PASV The client is asking where he should connect. Hosting Web Hosting Reseller VPS Hosting Cloud VPS Hosting Dedicated Hosting Support Account Management Knowledgebase Submit A Ticket Support Tickets Web Design Design Pricing Design Portfolio Request A Quote Company About Also note in this topic that you have emailed the log. _________________Martin Prikryl Advertisements [Reply to topic] You can post new topics in this forum Search Site What is WinSCP? Note that there's no way for WinSCP to keep the control connection alive during the transfer.

Advertisements: If this does not help and you are getting the error while logging in or while initiating file transfer: With SFTP or SCP protocol, all reasons and hints for "Network Close Submit Login Remember Me • Forgot Password? Additionally, the FTP was designed to operate over communications channels where packets travel directly to their destination, and not in todays environment where there may be a transparent intermediary that is Load Balancing provides two challenges for FTP.

Note that a directory listings are treated as data transfers just like uploading and downloading of files! Please check your dns entries. Client: PORT 192,168,1,2,7,138 The client wants the server to send to port number 1930 on IP address Note I'm speaking of the Server Type option on the General tab, which unfortunately has the same name as the one on the Advanced tab. _________________### BEGIN SIGNATURE BLOCK ###No support

A successful connection in "Passive" mode will list the "PASV" command: Support My Support Tickets Announcements Knowledgebase Downloads Network Status Open Ticket Hosting Magento Problems caused by the firewall prematurely timing out a valid FTP session [Contents] Routing devices have long been inappropriately deleting TCP/IP connections that they manage, mostly because they place greater restrictions Since many FTP clients (and Web browsers) still do not default to passive mode, FTP data connections will fail unless ephemeral ports on the client machine are remotely accessible. © Copyright But surprisingly, it is usually not trivial to configure the heartbeat timer, if it is configurable at all.

I've also tried the ftp.address.org as well as the direct IP address, and both result in the same error message. Top Profile Reply with quote boco Post subject: Re: FTP Timeout ErrorPostPosted: 2011-04-23 02:04 Offline Contributor Joined: 2006-05-01 03:28 Posts: 22710 Location: Germany Looks like there's not an FTP So, it is highly likely that FTP traffic can be farmed out from the load balancer with configuration of the load balancer. However, it really isn't feasible because the preferred transfer mode is "stream mode" and would require that the default data connection be reopened with each data transfer (and TCP won't let

For load balancing devices especially, this means that it is imperative to send the data connections to the same internal server that the control connection associated with it is being sent. There are two methods of managing the files on your web site.   You can do it via the control... When a transfer is initiated (on the control connection), the control connection is idle until the transfer (on the data connection) finishes. Solution 1: The network administrator of the server network can consult the routing device vendor's documentation to see if FTP connections can be dynamically monitored and dynamically replace the IP address

But there seems to be an SFTP server there (different protocol). So, find out how the FTP server machine has configured the ephemeral port range (whose default range varies with the operating system) and then open those ports on the firewall. Using our PASV example above, when the FTP server replies to the PASV request: Server: 227 Entering Passive Mode (172,16,3,4,204,173) The firewall would then parse the request and find that the Introduction to FTP There are several ways, depending on your computer system, that you can...

Even if the server-side network's routing device is configured for that special handling, problems could still arise on the client side! Scripting .NET & COM Library Screenshots Translations Support Forum Tracker History [[message_timeout_detected]] WinSCP Contents » Support » Common Error Messages » Timeout detected If you are getting this error, first The FTP was designed for an environment where clients and servers interact with each other with a minimum of restriction. The client has now connected to the server at port 52397 on IP address

Click here to signup... Client: USER anonymous Server: 331 Guest login ok, send your e-mail address as password. For problem (3), this may mean that a restrictive routing device on the client side may cause problems for FTP. For example, if a firewall is configured to discard idle connections after 15 minutes, you would want your Keep Alive probes to be sent after 10 minutes of inactivity.

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Loading... If the routing device were kind enough to send back a reply to the sending host with an error message, rather than dropping the packets and ignoring the sending host, the Application programs can only enable Keep Alive mode, but not specify when it should be triggered. Solution 1: The network administrator of the server network can give each slave server a valid externally accessible IP address.

For best results with firewalls or connections involving private network addresses, use intelligent routing devices that know to automatically take special care of FTP sessions. Newer Than: Search this thread only Search this forum only Display results as threads Useful Searches Recent Posts More... Why PASV Poses Problems for FTP Servers on Internal Networks [Contents] The other server-side problem that can occur is when a client is trying to access an FTP server on an You will NOT get any reply!!!FTP connection problems?

Knowledgebase Portal Home Knowledgebase Web Hosting I am getting Time Out Error while uploading files through ftp, how can I fix this? Top Profile Reply with quote Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 yearSort by AuthorPost timeSubject AscendingDescending Post new topic Reply to topic Page Use passive (PASV) mode from within your FTP client whenever possible. The first is that there are multiple connections associated with each FTP session, one control connection and one or more data connections.

Static IP addresses are heavily controled by ARIN and their use must be justified. I.e., from the example above we had: Client: PORT 192,168,1,2,7,138 When the packet containing this PORT reaches the routing device, it should be rewritten like this, assuming the external address is No, create an account now.