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Date:      Sat, 19 Feb 2000 16:56:20 -0700 (MST)
From:      Ivan Fetch <ivanfetch@technologist.com>
To:        cjclark@home.com
Cc:        dc <admin@cyrebels.org>, questions@FreeBSD.ORG
Subject:   Re: Redirecting/mapping ports to a local machine... help!
Message-ID:  <Pine.LNX.4.20.0002191654380.1636-100000@ibis.ivanfetch.tzo.com>
In-Reply-To: <20000219180014.B60348@cc942873-a.ewndsr1.nj.home.com>

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Although I have not had extensive use over a redirected FTP port, I have
transfered a file or two and it has workked.  I think the use of port 20
(which is what I assume you are refering to below) is only used in
certain kinds of transfers; certain FTP clients <?>.

Ivan.


On Sat, 19 Feb 2000, Crist J. Clark wrote:

> On Sat, Feb 19, 2000 at 11:15:32AM -0700, Ivan Fetch wrote:
> >  On Sat, 19 Feb 2000, dc wrote:
> > > Hi,
> > > 
> > > i've got 2 computers, 1 on freebsd, the other on windows. They are
> > > sharing the net using natd. But i got a ftp server on port 42 of my
> > > windows box, and i want to make it available from the outside... i tried
> > > to do it with "redirect_port", here goes my natd.conf file:
> > > 
> > > 
> > > ### Configuration file for Natd
> > > 
> > > alias_address    24.226.185.143
> > > redirect_port    tcp    192.168.0.2:42    42
> > > redirect_port    udp    192.168.0.2:42    42
> > > 
> > > ### End
> > > 
> > > 
> > > then i launched "natd -conf /etc/natd.conf", both computers were sharing
> > > the net as before, though i couldn't access the ftp server from the
> > > outside.
> > > 
> > > I can connect to the ftp server from the bsd box using the local ip
> > > (19.168.0.2)....
> >
> > Hello,
> >    Your Windows FTP server does work on port 42:
> > ftp your_Internet_IP 42
> > 
> > Connected to u-serv FTP...
> > 
> > I am not sure if this is why things were not working when you tedted them,
> > but testing your ftp connection from inside your LAN (192.168.X.X) will
> > not work.  Maybe telnet to another machine on the Internet and then try
> > FTPing back to your FreeBSD box for testing purposes.
> 
> Doing FTP over a NAT box is problematic due to the two-channel nature
> of FTP. As far as I know, NAT cannot fully support the FTP protocol.
> -- 
> Crist J. Clark                           cjclark@home.com
> 



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