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Newsgroups: mail-lists.delegate-en

[DeleGate-En] Re: FTP extended passive mode issues
09 Sep 2009 10:28:04 GMT (Yutaka Sato)
The DeleGate Project


In message <_A4554@delegate-en.ML_> on 09/08/09(17:35:22)
you Sebastien Barbereau <> wrote:
 |Concerning the 'why' we want to disable the  EPSV (you ar right it's not
 |the xdc but extended passive):
 |Our proxy sits on a dedicated DMZ of our firewall. For some reasons the
 |firewall doesn't seem to interpret the EPSV command in some
 |circumstances. In other words:
 |- from proxy to internet EPSV works
 |- from hosts on a different network as the proxy via the ftp-proxy (and
 |through the firewall): doesnt work. I can event see the packets of the
 |extended connection being rejected by the firewall.
 |This makes me think that the firewall has a problem to handle the EPSV
 |command parameters when they come from the proxy. The most obvious and
 |immediate change for me is to disable EPSV at the proxy level for the
 |clients. (In a second phase trying to get the FW vendor to acknowledge
 |the problem and solve it).

I see.

 |I can confirm that nopasv:cl does solve the problem but I didnt yet had
 |a chance to test your patch.  I will do so as soon as possible.

I uploaded 9.9.5-pre7 including the patch for FTPCONF="noepsv:cl".

  9 9   Yutaka Sato <>
 ( ~ )  National Institute of Advanced Industrial Science and Technology
_<   >_ 1-1-4 Umezono, Tsukuba, Ibaraki, 305-8568 Japan
Do the more with the less -- B. Fuller

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