Re: FreeBSD FTP problem
From: Arcadius A. (ahouans_at_sh.cvut.cz)
Date: 07/07/03
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To: "Ryan Thompson" <ryan@sasknow.com>, "FreeBSD Questions" <freebsd-questions@freebsd.org> Date: Mon, 7 Jul 2003 01:44:32 +0200
----- Original Message -----
From: "Ryan Thompson" <ryan@sasknow.com>
To: "FreeBSD Questions" <freebsd-questions@freebsd.org>
Sent: Monday, July 07, 2003 1:07 AM
Subject: Re: FreeBSD FTP problem
>
> [ CC: freebsd-questions@FreeBSD.org, reply to private email ]
> [ BCC: sender, kept anonymous ]
>
> > Hello Ryan!
> > I've seen your post at:
> > http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=Pi
> > ne.BSF.4.10.10001272241220.56704-100000%40sasknow.com&rnum=5&prev=/gro
> > ups%3Fq%3DFreeBSD%2B%2B425%2Bcan%27t%2Bbuild%2Bdata%2Bconnection:%2Bop
> > eration%2Btimed%2Bout%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26se
> > lm%3DPine.BSF.4.10.10001272241220.56704-100000%2540sasknow.com%26rnum%
> > 3D5
>
> *extremely* long line wrapped. Knowing just a little bit about Google,
> this reduces to:
>
>
http://groups.google.ca/groups?threadm=Pine.BSF.4.10.10001271959170.55593-100000_sasknow.com%40ns.sol.net
>
> But, yes... That was little piece of history! :-)
>
> > I'm having exacly the same problem with my FreeBSD4.8.
> >
> > Some houres ago... eveything was Ok.... but I don't know what has
> > changed.... I can still FTP the FeeBSD server from my windows box....
> > but nothing more.... just the same arror as the one you've described:
> > "... 425 can't build data connection: operation timed out ..." :-(((
> >
> > Do you have any idea about how to get around this?
>
> Well, in my case, it turned out to be pilot error... FTP is a tricky
> protocol to allow through default-deny firewalls, and I had simultaneous
> bugs in my firewall config *and* FTPd config, with respect to passive
> transfers. It took me a while to spot.
>
> Check your firewall config carefully, and make sure you have a good
> understanding of how the FTP protocol works (in active and passive
> modes). Completely open your firewall temporarily (i.e., ipfw add 201
> allow ip from any to any) and verify that things work there. If things
> work there (or fail differently), the problem is with your firewall (and
> possibly FTPd configuration, if you're using the ephemeral port range
> for PASV). If your tests fail in *exactly* the same manner as before,
> including the same timeout delays, you can ignore your firewall for the
> time being (but leave it open until you get FTP working, and *then*
> restrict it, so you're only testing one unknown at a time). Try running
> tcpdump and sockstat on the server to see what's coming and going for
> FTP traffic. /ports/net/trafshow might be helpful, too.
>
Hello!
Thanks for the reply!
But I'm not running any firewall on my server...
Here's my /etc/rc.conf
<rc.conf>
..
..
#named_enable="YES"
firewall_enable="NO"
#natd_enable="NO"
#firewall_type="open"
#firewall_script="/etc/rc.ipfw"
enable_quotas="YES"
check_quotas="NO"
linux_enable="YES"
...
...
</rc.conf>
So, my problem shouldn't be with the firewall on my server...
About the configuration of FTPd, I cannot find the config file (ftpd.conf
or ftpd.config or ftpd.cf )on my server(FreeBSD4.8 stable, built yesterday).
Note that I'm trying to connect to FreeBSD from a windows workstation....
both the workstation and the FreeBSD server are in the same LAN.... From my
Windows box, I can easilly connect via FTP to other Linux sercers in my LAN
or even out of the LAN.. But when I connect to my FreeBSD server, it connecs
well... but I cannot do anything useful on the server.... I get the error
"...425 can't build data connection: operation timed out..."
My server was running FreeBSD4.6 before and I didn't have any trouble with
FTPd .... I just upgraded yesterday.... and still, I haven't noticed this
problem.... I start getting this error just a while ago... :-( ... I've
rebooted the server... but it didn't help
Thanks for the support.
Arcadius.
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