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Date:      Thu, 06 Sep 2001 07:55:56 -0700
From:      Cy Schubert - ITSD Open Systems Group <Cy.Schubert@uumail.gov.bc.ca>
To:        "David W. Chapman Jr." <dwcjr@inethouston.net>
Cc:        "Mike Tancsa" <mike@sentex.net>, stable@FreeBSD.ORG
Subject:   Re: ipnat bug (caught in action) 
Message-ID:  <200109061456.f86EuDV55489@cwsys.cwsent.com>
In-Reply-To: Your message of "Wed, 05 Sep 2001 16:24:40 CDT." <00c101c13651$2c2bbf80$fe0c4042@inethouston.net> 

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In message <00c101c13651$2c2bbf80$fe0c4042@inethouston.net>, "David W. 
Chapman
Jr." writes:
> One thing I also noticed which might be the key information to the
> situation(just noticed)  whenever I ftp out....
> 
> Connection attempt to TCP 66.64.37.65:2797 from 216.153.199.41:20
> Connection attempt to TCP 66.64.37.65:2797 from 216.153.199.41:20
> Connection attempt to TCP 66.64.37.65:2797 from 216.153.199.41:20
> Connection attempt to TCP 66.64.37.65:2797 from 216.153.199.41:20
> 
> 
> Note currently its only broken for one site, so I'm assuming their server is
> broke, but its only broke behind ipnat ftp proxy
> 
> 
> Here is the error I get from the client
> 
> 230 User  logged in.
> PORT 66,64,37,65,10,214
> 200 PORT command successful.
> NLST
> 150 Opening ASCII mode data connection for /bin/ls (27 bytes).
> 426 Error. Transfere aborted. 10053
> 
> 
> Note this message doesn't necessarily go with the dmesg from above.

If you can reproduce this, a tcpdump would be something you'd want to 
send to Darren Reed.  IME, problems like this usually are packets being 
outside of the TCP window.


Regards,                         Phone:  (250)387-8437
Cy Schubert                        Fax:  (250)387-5766
Team Leader, Sun/Alpha Team   Internet:  Cy.Schubert@osg.gov.bc.ca
Open Systems Group, ITSD
Ministry of Management Services
Province of BC




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