Subject: Re: problems connecting to ftp.netbsd.org
To: Eric Haszlakiewicz <email@example.com>
From: Quentin Garnier <firstname.lastname@example.org>
Date: 04/03/2006 22:16:47
Content-Type: text/plain; charset=us-ascii
On Mon, Apr 03, 2006 at 01:53:49PM -0500, Eric Haszlakiewicz wrote:
> Has anyone else been having trouble connecting to ftp.netbsd.org?
> I have one particular windows machine that can't get past the "230-" just
> after logging in. Another machine, sitting right next to it, works just
> I would chalk it up to something messed up with my machine, except
> that it can connect to many other ftp servers. e.g. most netbsd mirrors
> work ok, but several don't: ftp.cz.netbsd.org, ftp.tw.netbsd.org,
> ftp.be.netbsd.org, ftp.jp.netbsd.org, ftp7.us.netbsd.org.
Usually that has to do with MTU and/or badly configured proxies
(transparent or not). I remember helping out a fellow developer a few
years ago; turned out the proxy wanted packets to begin with an FTP
response code on the command channel. Or maybe it wanted all packets to
end with a newline, something like that. Making /etc/issue Just The
Right Size made it work.
The reason behind it is that the packet that follows the 230- line is as
big as it can get; 1500 bytes. Sometimes the link doesn't support such
a big packet, for some reason.
So check MTU, MSS negociation, proxies, stuff like that.
Quentin Garnier - email@example.com - cube@NetBSD.org
"When I find the controls, I'll go where I like, I'll know where I want
to be, but maybe for now I'll stay right here on a silent sea."
KT Tunstall, Silent Sea, Eye to the Telescope, 2004.
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