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Date:      Tue, 19 Mar 2002 15:21:25 -0500
From:      Chris Johnson <cjohnson@palomine.net>
To:        security@freebsd.org
Subject:   Re: Safe SSH logins from public, untrusted Windows computers
Message-ID:  <20020319152125.F43336@palomine.net>
In-Reply-To: <20020319131408.C324@ophiuchus.kazrak.com>; from brad@kazrak.com on Tue, Mar 19, 2002 at 01:14:08PM -0700
References:  <20020319144538.A42969@palomine.net> <20020319131408.C324@ophiuchus.kazrak.com>

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On Tue, Mar 19, 2002 at 01:14:08PM -0700, Brad Jones wrote:
> On Tue, Mar 19, 2002 at 02:45:38PM -0500, Chris Johnson wrote:
> > I spend a lot of time in hotels, and most of them have Internet centers=
 with
> > Windows computers for the use of hotel guests. It's easy enough to down=
load a
> > copy of PuTTY and hide it in the Windows directory so that I can make S=
SH
> > logins to my various remote servers.
>=20
> S/Key.  It's built-in to FreeBSD, doesn't require any special hardware (j=
ust
> a bit of planning ahead), and lets you avoid reusable passwords.
>=20
> Set it up for your account, and set up 'sudo' so you can get to a root sh=
ell
> without typing a reusable password.  Then print up 20-30 responses (or
> however many you think you'll need) and go...you enter the one-time passw=
ord
> at the appropriate SSH prompt, and a keystroke sniffer never gets any use=
ful
> information.  (Sure, they got phrase #94...but that one's been used, and
> won't work anymore.)
>=20
> Recommended man pages: 'keyinit' will get you started, 'key' lets you
> create a file of keys that you can print and take with you.  (If you have
> a palmtop, most of them have key-generation programs you can use instead.)
> 'skey' gives an overview.

Thanks very much for this; it seems to be just the ticket. I didn't know
anything about S/Key, other than it's the thing I recently turned off in my
sshd_config file because sshd was prompting me for things to which I didn't
know the answer.

Thanks for all the responses.

Chris

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