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000257_fdc@columbia.edu_Thu Dec 27 11:06:11 EST 2001.msg
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Article: 13087 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!news.columbia.edu!news-not-for-mail
From: fdc@columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Using multiple kermits in series between machines
Date: 27 Dec 2001 11:05:54 -0500
Organization: Columbia University
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In article <1009447151.415636@irys.nyx.net>,
Henry van Cleef <hvanclee@nyx10.nyx.net> wrote:
: I have the final release of Kermit 8 200, and am building it to
: install on several machines. I'm doing some remote administration
: over a plain telephone modem connection to a remote console port,
: using a modem server machine, and have tried using kermit to telnet
: from my main development machine to the modem server, another kermit
: to connect to the console port, and kermit at the other end to receive
: executables.
:
: The configuration looks like this:
:
: Dev machine->telnet kermit->modem server->remote console
: machine->kermit server.
:
: Trying to send from the development machine to the server gets tied in
: knots---appears that transmission set up as TCP/IP from the source
: won't go down the phone line as packets. I shut off streaming at both
: ends, but it still fails.
:
There's a section in "Using C-Kermit" called C-Kermit in the Middle
(pages 162-164), which explains how to make the intermediate Kermit
transparent to all 8-bit byte patterns. In C-Kermit 7.0 we added a
command-line option, -0 (digit zero) for this:
http://www.columbia.edu/kermit/ckermit70.html#x9.3
Quoting:
-0 (digit zero) means "be 100% transparent in CONNECT mode". This is
equivalent to the following series of commands:
SET PARITY NONE
SET COMMAND BYTESIZE 8
SET TERMINAL BYTESIZE 8
SET FLOW NONE
SET TERM ESCAPE DISABLED
SET TERM CHAR TRANSPARENT
SET TERM AUTODOWNLOAD OFF
SET TERM APC OFF
SET TELOPT KERMIT REFUSE REFUSE
SET FLOW NONE might need adjustment if a serial device is involved.
: While I can get around the problem by NFS mounting my development disk
: area on the modem server, and using kermit from it in one jump from
: two, I wonder how---if it is possible, to chain kermits together in
: series.
:
Use -0 or the commands listed above and, yes, since you have some non-reliable
segments in the chain, also SET RELIABLE OFF (or SET STREAMING OFF). For
In case the terminal server is not transparent, also you might need:
SET PREFIXING CAUTIOUS (or NONE)
Obviously a multihop connection like this will not have the bandwidth of
a direct end-to-end connection.
- Frank