[1015] in resnet
Re: Quick question
daemon@ATHENA.MIT.EDU (Michael Seibert)
Mon Mar 25 16:45:59 2002
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Message-ID: <sc9f5275.023@husky.bloomu.edu>
Date: Mon, 25 Mar 2002 16:38:08 -0500
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: Michael Seibert <mseibert@HUSKY.BLOOMU.EDU>
To: RESNET-L@listserv.nd.edu
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>>> mike.hamrick@UNH.EDU 03/25/02 03:54PM >>>
Hello all,
Recent events have prompted me to take very quick, very unscientific
survey.
Please just answer YES or NO to the following questions. If you would
like
to expound on this matter, please feel free to do so....
* Does your network admin group block FTP clients that do not
comply
with the FTP protocol standards? (Specifically any clients that use
random
ports, such as QVT FTP)
I think you are talking about active and passive mode ftp. Both are
necessary. For example: if you are downloading a printer driver from HP
this would need to be a passive connection or else HP's web server could
only allow one person to download at a time. The server and client
first negotiate on port 21 and then use a higher port to continue the
transfer. Sendmail works the same way.
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<DIV><BR><BR>>>> mike.hamrick@UNH.EDU 03/25/02 03:54PM
>>><BR>Hello all,<BR><BR>Recent events have prompted me to take very
quick, very unscientific survey.<BR><BR>Please just answer YES or NO to the
following questions. If you would like<BR>to expound on this matter,
please feel free to do so....<BR><BR>* Does
your network admin group block FTP clients that do not comply<BR>with the FTP
protocol standards? (Specifically any clients that use random<BR>ports,
such as QVT FTP)<BR></DIV>
<DIV>I think you are talking about active and passive mode ftp. Both are
necessary. For example: if you are downloading a printer driver
from HP this would need to be a passive connection or else HP's web
server could only allow one person to download at a time. The server
and client first negotiate on port 21 and then use a higher port to continue the
transfer. Sendmail works the same way.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV></BODY></HTML>
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