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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[-- Attachment #1 --] 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 download a > > copy of PuTTY and hide it in the Windows directory so that I can make SSH > > logins to my various remote servers. > > S/Key. It's built-in to FreeBSD, doesn't require any special hardware (just > a bit of planning ahead), and lets you avoid reusable passwords. > > Set it up for your account, and set up 'sudo' so you can get to a root shell > 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 password > at the appropriate SSH prompt, and a keystroke sniffer never gets any useful > information. (Sure, they got phrase #94...but that one's been used, and > won't work anymore.) > > 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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE8l53EyeUEMvtGLWERAnj7AJ0dk/ACXlmXoIuuhBQtpdW+lXCNTwCeJcfa q18WIaY89hd21wMX+15IaAQ= =L3Nt -----END PGP SIGNATURE-----help
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