Date: Fri, 29 Mar 2002 20:45:52 -0500 (EST) From: Peter Leftwich <Hostmaster@Video2Video.Com> To: Jason Stone <jason@shalott.net> Cc: Fernan Aguero <fernan@iib.unsam.edu.ar>, FreeBSD Security <freebsd-security@FreeBSD.ORG> Subject: Re: using ssh to run remote commands? [ssh -T, scp/ssh flags] Message-ID: <20020329204245.N81735-100000@earl-grey.cloud9.net> In-Reply-To: <20020328003857.J5333-100000@walter>
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On Thu, 28 Mar 2002, Jason Stone wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I'd like to know how to run remote commands using ssh. I know I can do it as myself, but I'd like to know how can I set up my systems to allow non-login users (root, operator, amanda) to run remote commands on other hosts. > You can't - ssh will always try to run a command by calling the user's shell, so unless you patch it, you _must_ give the user a valid shell. I thought there was some way to run "ssh -T user@host" to bypass your shell, no? > The best you can do is to give the user a valid shell but an invalid password (eg, "*") and use ssh keys to authenticate. For additional security, you can specify a command along with the key in the authorized_keys file so that the key can _only_ be used to run that command (and not to get a shell). man ssh, ssh-keygen. > -Jason Why are the man page and options for the command "scp" so LIMITED compared to those of "ssh?" > I worry about my child and the Internet all the time, even though she's too young to have logged on yet. Here's what I worry about. I worry that 10 or 15 years from now, she will come to me and say "Daddy, where were you when they took freedom of the press away from the Internet?" -Mike Godwin GREAT quote, depressing, but great. > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.0.6 (FreeBSD) > Comment: See https://private.idealab.com/public/jason/jason.gpg > > iD8DBQE8othXswXMWWtptckRAsYLAJ9Xkk7nHT5v96DxvTIiagd0elMvAACgn1qO > 4TtJLt7YCkrAMmgWtskX7sk= > =jZLv > -----END PGP SIGNATURE----- Please comment on "ssh -T" and "scp vs ssh options." -- Peter Leftwich President & Founder Video2Video Services Box 13692, La Jolla, CA, 92039 USA +1-413-403-9555 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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