[windows2000] Re: Changing FTP ports
- From: "Sorin Srbu" <sorin.srbu@xxxxxxxxxxxxx>
- To: <windows2000@xxxxxxxxxxxxx>
- Date: Tue, 27 Mar 2007 14:05:47 +0200
Ray Costanzo <> wrote on Tuesday, March 27, 2007 1:52 PM:
If you use IE to ftp stuff, be sure to set it up to use passive ftp on the
advanced tab. I'd say this is your problem. Had similar error messages as you
pasted below while I had IE use passiv ftp, but the ISP wanted me to use
active...
If you want to use active ftp you need to have port 21 and 22 opened (or some
such). Active ftping is not encouraged to use for security reasons.
> Hi group,
>
>
>
> I have a W2K server behind a home-style D-Link router at home, and I had it
> setup such that port 21 was forwarded to this server so that I could ftp
> files between work and home. At the IIS level, I had the FTP site set to
> only allow connections from my work IP address. This worked fine as far as
> keeping other people out, but my event logs would still be filled up by all
> the failed attempts from those bastards out there who are trying to get
> into any FTP site they can.
>
>
>
> So, what I did was changed the FTP port to some other arbitrary port number
> (2025) in IIS and updated my router accordingly. But now, when I ftp in, I
> can connect, but I can't transfer any data. I think this may have
> something to do with that active vs. passive thing where the FTP command
> communication uses one port and data uses another or something like that.
> Would anyone know what I can do to get this working again? I tried
> reforwarding port 21 to the server again in case IIS still needed that port
> for actual data transfer, but that didn't help. Previously, I had only
> port 21 forwarded, not 21 & 22 or anything like that.
>
>
>
> Sample FTP session:
>
>
>
> ftp> open home 2025
>
> Connected to home.
>
> 220 server Microsoft FTP Service (Version 5.0).
>
> User (home:(none)): SomeUserAccount
>
> 331 Password required for SomeUserAccount.
>
> Password:
>
> 230 User SomeUserAccount logged in.
>
> ftp> dir
>
> 500 Invalid PORT Command.
>
> 150 Opening ASCII mode data connection for /bin/ls.
>
> --Never finishes and just sits here forever; when I break out, this is the
> error:
>
> 425 Can't open data connection.
>
>
>
> Thanks for anything,
>
>
>
> Ray at work
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