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From: Hal Snyder <hal@vailsys.com>
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Subject: Re: Hung (?) ftp processes
To: freebsd@trogon.kiwi.net (Christopher Taylor)
Date: Thu, 3 Oct 1996 15:53:33 -0500 (CDT)
Cc: questions@freebsd.org
In-Reply-To: <Pine.BSF.3.91.961003120157.7544B-100000@trogon.kiwi.net> from "Christopher Taylor" at Oct 3, 96 12:03:33 pm
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Christopher Taylor said:

> On Thu, 3 Oct 1996, Cliff Addy wrote:

> > We have a continuing problem using wu-ftpd.  Logins (anonymous and not) 
> > tend to leave active logins long after the connection is over.  We're 
> > talking hours later.  Of course, this eventually maxes out the number of 
> > connections and noone can get in.

> > First of all, any clue why this happens?  Second, I don't care if there 
> > was a way I could kill ftp logins idle over, lets say, 10 minutes.  Using 
> > the -t and -T options has not affected this problem.  I can kill an idle 
> > telnet, I just don't know how to kill (or even find) these ftp logins.  
> > They don't appear as processes, just connections in netstat.
> 
> Yes, we have been experiencing the same problem you have. We are running 
> WU-FTPD 2.4.2[ACADEM-11]. It seems to only occur, when the person loses 
> carrier while online to ftp. I am not positive, because I have not 
> extensively tested my theory.

I see the same with BSD ftpd version 6.00 - an ftp session that ended
weeks ago, nothing in ps output, but nestat -a shows this (host names
changed to protect the innocent):

tcp        0      0  mybsdhost.ftp-data    remote.xyz.com.4013     ESTABLISHED
tcp        0      0  mybsdhost.ftp         remote.xyz.com.3895     ESTABLISHED

What is this about?