Re: D-Link DI-524 blocks FTP xfer

DanS wrote:
windsurferLA <ps144nyc@xxxxxxxxx> wrote in
news:48404894$0$30238$4c368faf@xxxxxxxxxxxxxx:

DanS wrote:
windsurferLA <ps144nyc@xxxxxxxxx> wrote in news:483fc07c$0$5705
$4c368faf@xxxxxxxxxxxxxx:

Hardware ... DELL E510, 3GHz w/ 1 GB RAM
D-Link DI-524 router, Motorola SURFboard cable modem.
Software .. WinXP SR-3, "FTP Commander" and/or WS_FTP95

Somehow, I must have inadvertently changed the firewall settings on
my router as I cannot do FTP transfers when connected to the
SURFboard modem via the D-Link DI-524 router. I could swear that it
used to work. I have no problem with general web surfing.
However, if I bypass the router, I can see the files on the server
and upload files. If the router is in the path, in cannot see the
contents of the directories or upload files.

Any suggestions? WindsurferLA
You are talking about an FTP client behind your router connecting to
an FTP server somewhere on the Internet right ?

In whatever FTP client you are using, check the Passive Mode (PASV)
setting for the connection. Tunr it off/or on and try it that way.

Checking Passive Mode did the trick.. Turning it on makes it work.
Thanks

Glad it worked out...I don't know why it would have changed. Most FTP clients have a global setting, under the main options, which is applied to all new connections. And then each individual connection detail has a PASV mode override on a per-connection basis.

I never really did understand passive mode. My FTP site, inside my network, requires that passive mode be turned off or it never gets a data channel. The initial connection works OK, as you can see in the log, but then it would say 'can't open data channel'. Everything I've seen says PASV mode is for connecting to an FTP behind a NAT rtr...but not mine.
I've never before had passive / non-passive mode make any difference. When I connect directly to my modem, bypassing the router, I don't need to be in the passive mode. Behind the router, the FTP transfer program seems to require it. Why I don't understand.

Thanks for hint ... Fortunately all is now working.
.

Relevant Pages

  • Re: Passive means what during FTP?
    ... :227 Entering Passive Mode ... :ftp: connect: No route to host ... The FTP data transfer uses a connection that is separate from the ... address and port number to connect to for the data transfer. ...
    (comp.os.linux.setup)
  • Re: Local area connection issues - crossposted.
    ... Last evening I came home, the LAN connection icon wasn't showing, ... so that the router won't detect a "Syn flood". ... ADSL modem and the router, to see exactly what they're looking for. ... My comment is mainly focused on the idea of running an open FTP server. ...
    (alt.comp.hardware.pc-homebuilt)
  • RE: Cannot set up 3rd-party ftp server on VISTA
    ... serv-U and router allowing to connect via UPnP. ... A connection appears to be established (windows defender in Vista shows:) ... Wireless LAN adapter Wireless Network Connection: ... Open ftp client and connected to 127.0.0.1:21 and it worked fine. ...
    (microsoft.public.windows.vista.networking_sharing)
  • Re: FTP question
    ... |> I have one server that has had connectivity issues this past week ... |> directed at trying yet another ftp software. ... |> or an error about the socket connection. ... |> own modem and a Linksey router using Xp 64bit system. ...
    (microsoft.public.windowsxp.network_web)
  • Re: I cannot get my damn FTP server to work? Really frustrating.
    ... You just FTP to 192.168.1.100 from PC1. ... In your setup, port forwarding on routers is *only* for allowing ... > -Linksys cable modem and a Linksys router. ... > -I have 2 pc's connected to the modem sharing the cable connection. ...
    (microsoft.public.inetserver.iis.ftp)
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