Date: Wed, 28 Jul 1999 05:09:18 -0700 (PDT) From: Loren Daniel Koss <loren@pciway.com> To: Brian Somers <brian@FreeBSD.org.uk> Cc: Brian Somers <brian@Awfulhak.org>, freebsd-questions@FreeBSD.ORG Subject: Re: FTP through NATD.. Message-ID: <Pine.BSF.4.10.9907280507420.2215-100000@unix.pciway.com> In-Reply-To: <199907281141.MAA01614@keep.lan.Awfulhak.org>
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Brian, Thanks for your help.. I tried passive mode which doesn't show the "INVALID PORT COMMAND" error, but just hangs after issuing a LIST, GET, or PUT command.. It's strange.. As soon as I change it back to port 21, everything works fine. Do you think it might be a bug in my FTP server? I am using M$, so anything is possible there.. Loren On Wed, 28 Jul 1999, Brian Somers wrote: > Hi, > > The only other thing I can think of is that your client may be having > a problem with the port number from which the back-channel comes. > You could try the -same_ports switch - it may help, although I belive > it's the default anyway. > > If all else fails, passive mode on the client is probably the best > thing to aim for :-/ > > > No, I'm trying to get *in* to a "dodgy" (are you english?) ftp port.. > > Actually, I have it exposed to the world as 8002, but internally on my NT > > box it is 6002. It could very well be 8002 on the internal, but for some > > reason when I tried 6002 on the 216.32.46.218, it failed, so I moved it.. > > I Like I said, I can still connect.. I just can't do anything over the > > data connection.. It fails on the PORT command.. What do you think is > > the problem? > > > > Loren > > > > On Wed, 28 Jul 1999, Brian Somers wrote: > > > > > Hmm, I thought you were trying to get *out* to a dodgy ftp port.... I > > > didn't read your post properly. You don't need to use passive mode > > > for this. > > > > > > Shouldn't your config say something like > > > > > > redirect_port tcp 192.168.1.20:6002 216.32.46.218:6002 > > > > > > assuming the incoming packets are addressed to 216.32.46.218 ? Is > > > the 8002 below a typo ? > > > > > > > Okay, I did that and now it just hangs after it connects and tries to do > > > > a listing of the files.. What should > > > > the NATD.CONF file look like? I have: > > > > > > > > redirect_port tcp 192.168.1.20:6002 216.32.46.218:8002 > > > > > > > > It's really weird.. > > > > > > > > Thanks for your help. > > > > > > > > Loren > > > > > > > > On Tue, 27 Jul 1999, Brian Somers wrote: > > > > > > > > > > Brian, > > > > > > do you mean passive mode on the FTP server? Its a WIN NT box.. Or do you > > > > > > mean passive mode of NATD or something? Sorry I'm such a newbie.. > > > > > > > > > > Passive mode on the client side. > > > > > > > > > > Passive mode basically means that the server does not try to open up > > > > > a second channel back to the client. The NAT stuff can only handle > > > > > this sort of thing if it can recognise the ``PORT'' command going out > > > > > on the original channel (it then prepares itself for the > > > > > back-connect), but natd only looks for PORT commands on the standard > > > > > ftp port. > > > > > > > > > > > On Tue, 27 Jul 1999, Brian Somers wrote: > > > > > > > > > > > > > > > > > > > > > I am having a helluva time with this.. I moved the port of my FTP server > > > > > > > > that is behind my FreeBSD box to 6002.. I am able to connect to it from > > > > > > > > the outside just fine, except for doing any LIST, PUT, or GETs.. They get > > > > > > > > me a "INVALID PORT COMMAND" Does anyone know how to solve this?? > > > > > > > > > > > > > > If you're not using the standard ftp port, you *must* use passive > > > > > > > mode ftp (otherwise libalias won't detect and fix the port command). > > > > > > > > > > > > > > Passive mode is enabled in FreeBSD with ``-p''. > > > > > > > > > > > > > > > Thanks > > > > > > > > Loren > > > > > > > > > > > > > > > > loren@pciway.com > > -- > Brian <brian@Awfulhak.org> <brian@FreeBSD.org> > <http://www.Awfulhak.org>; <brian@OpenBSD.org> > Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk> > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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