• Subject: RE: Ethernet x-over cable
  • From: Tim McCarthy <TimM@xxxxxxxxxxxxxxxxxx>
  • Date: Mon, 29 Nov 1999 17:48:53 -0500


> -----Original Message-----
> From: Jim Langston [SMTP:jlangston@conexfreight.com]
> Sent: Monday, November 29, 1999 1:07 PM
> To:   MIDRANGE-L@midrange.com
> Subject:      Re: Ethernet x-over cable
> 
> FYI: For FTP it is ports 20 and 21.  21 is the port you connect to
> when
> you run FTP, port 20 is the port the server or client send the file
> transfer
> data on.
> 
This is only true when operating in "active" rather than passive
connection mode and usually suggests the client is a PC or other "single
user" system.

> You would need to map both of these ports.
> 
> Regards,
> 
> Jim Langston
> 
> Carl Galgano wrote:
> 
> > <SNIP>
> 
> > I have found
> > that I was unable to FTP from the Internet to any FTP servers on my
> Internal
> > network even if I set up the mapped port.  I think this has
> something to do
> > with 2 ports being used for FTP, one for control and one for data.
> 
> <SNIP>
> 
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