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Date:      Wed, 12 Jun 2002 14:14:56 +0000
From:      Anthony Schneider <aschneid@mail.slc.edu>
To:        Peter Pentchev <roam@ringlet.net>
Cc:        twig les <twigles@yahoo.com>, Jack Xiao <jack_xiao99@hotmail.com>, freebsd-security@FreeBSD.ORG, Lowell Gilbert <lowell@world.std.com>, "Mark S." <mark@furball.net>, Derek Ragona <derek@computinginnovations.com>
Subject:   Re: ssh questions
Message-ID:  <20020612141456.A18932@mail.slc.edu>
In-Reply-To: <20020612102406.C73294@straylight.oblivion.bg>; from roam@ringlet.net on Wed, Jun 12, 2002 at 10:24:06AM %2B0300
References:  <OE39kl4AU1O6YalkXh3000015ab@hotmail.com> <20020612000355.11939.qmail@web10107.mail.yahoo.com> <20020612102406.C73294@straylight.oblivion.bg>

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I've never had a problem sending passphrases to ssh via expect, personally.
-Anthony.

>=20
> BTW, have you actually tried this with SSH and/or sftp?  I have no doubt
> that it will work as far as the sending of commands, but there might be
> a little problem concerning the authentication itself: SSH is really,
> really picky about having the password or passphrase read from a
> terminal, not from just any input stream.  Thus, when Expect opens SSH,
> attaching pipes to its standard input and output, SSH will refuse to
> read a passphrase from its stdin and try to read it from the controlling
> terminal instead.  Since a cron-run process will have no controlling
> terminal, SSH will exit with a message along the lines of 'you have no
> controlling terminal, unable to read passphrase'.
>=20
> Thus, even with Expect, one will need to setup some form of
> empty-passphrase authentication for unattended SSH/scp/sftp connections.
>=20
> G'luck,
> Peter
>=20
> --=20
> Peter Pentchev	roam@ringlet.net	roam@FreeBSD.org
> PGP key:	http://people.FreeBSD.org/~roam/roam.key.asc
> Key fingerprint	FDBA FD79 C26F 3C51 C95E  DF9E ED18 B68D 1619 4553
> If you think this sentence is confusing, then change one pig.



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