Comments on: Unattended SSH login / public key authorization / ssh automatic login http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/ Enhancing your Ubuntu experience! Thu, 02 Feb 2012 10:29:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Ken Gribble http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-14487 Ken Gribble Mon, 10 Jan 2011 19:21:33 +0000 http://ubuntu-tutorials.com/?p=266#comment-14487 <blockquote cite="#commentbody-821"> <strong><a href="#comment-821" rel="nofollow"> Marius Gedminas </a> :</strong>Or set a passphrase on the SSH key, and then use ssh-add once per session to add it to ssh-agent, so that you don’t have to type it for every ssh invocation. ... </blockquote> I agree with Marius. I've seen public keys with no passwords cause a world wide break-in on more than a dozen important machines. I always advise using a password, then some key management system like ssh-add.

Marius Gedminas :Or set a passphrase on the SSH key, and then use ssh-add once per session to add it to ssh-agent, so that you don’t have to type it for every ssh invocation. …

I agree with Marius. I’ve seen public keys with no passwords cause a world wide break-in on more than a dozen important machines. I always advise using a password, then some key management system like ssh-add.

]]> By: Daniel Wiltshire http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-12164 Daniel Wiltshire Sat, 30 Oct 2010 12:24:43 +0000 http://ubuntu-tutorials.com/?p=266#comment-12164 Great article, ran the commands on my Mac to connect to my Ubuntu Server. I will store the key on a flash drive so I can use it anywhere with the right utilities! Like the site, and the smiley face at the bottom left of site! :P Great article, ran the commands on my Mac to connect to my Ubuntu Server. I will store the key on a flash drive so I can use it anywhere with the right utilities! Like the site, and the smiley face at the bottom left of site! :P

]]> By: michiel http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-10412 michiel Thu, 28 Jan 2010 18:20:45 +0000 http://ubuntu-tutorials.com/?p=266#comment-10412 sorry, this command of course: $ chmod 750 /home/michiel sorry, this command of course:

$ chmod 750 /home/michiel

]]> By: michiel http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-10411 michiel Thu, 28 Jan 2010 18:19:53 +0000 http://ubuntu-tutorials.com/?p=266#comment-10411 I just like to add that your home directory on the remote machine (the SSH server) has to be at least as closed as chmod 755. In my case I did simply this and then everything finally worked (macosx client to Linux server): $ chmod 750 I just like to add that your home directory on the remote machine (the SSH server) has to be at least as closed as chmod 755. In my case I did simply this and then everything finally worked (macosx client to Linux server):

$ chmod 750

]]> By: lonny27 http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-9302 lonny27 Fri, 24 Jul 2009 12:15:13 +0000 http://ubuntu-tutorials.com/?p=266#comment-9302 that dame thing swallowed the angle brackets... Host <hostname> IdentityFile ~/.ssh/my_id where <hostname> is this host you copied the public key to. that dame thing swallowed the angle brackets…

Host &lt;hostname&gt;
IdentityFile ~/.ssh/my_id

where &lt;hostname&gt; is this host you copied the public key to.

]]> By: lonny27 http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-9301 lonny27 Fri, 24 Jul 2009 12:11:41 +0000 http://ubuntu-tutorials.com/?p=266#comment-9301 I'm missing something here. If you've create a new key e.g. my_id / my_id.pub with no password set, you need to create a file 'config' in ~/.ssh to get this working (at least in 8.04, 8.10, 9.04) Host IdentityFile ~/.ssh/my_id where is this host you copied the public key to. I’m missing something here. If you’ve create a new key e.g. my_id / my_id.pub with no password set, you need to create a file ‘config’ in ~/.ssh to get this working (at least in 8.04, 8.10, 9.04)

Host
IdentityFile ~/.ssh/my_id

where is this host you copied the public key to.

]]> By: Pablo http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-7849 Pablo Fri, 13 Feb 2009 15:50:00 +0000 http://ubuntu-tutorials.com/?p=266#comment-7849 Thanks, you've been very clear and your explanation very useful, thanks again. Thanks, you’ve been very clear and your explanation very useful, thanks again.

]]> By: Len http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-5765 Len Wed, 10 Sep 2008 13:41:15 +0000 http://ubuntu-tutorials.com/?p=266#comment-5765 To actually log in on many linux systems you must include the private key when you invoke your ssh session: ssh -i ~/.ssh/publickeyname -X username@system The -i means include the key the ~ means find this in my home folder (typically /user/username) The .ssh is a hidden file that contains your keys after you generate them. The -X means transfer X windows to the new session and is optional. It allows you to run graphics or gui programs over the connection if you want to. The user@system is your user id on the remote system and the name of that system. /Len WT6G To actually log in on many linux systems you must include the private key when you invoke your ssh session:

ssh -i ~/.ssh/publickeyname -X username@system

The -i means include the key
the ~ means find this in my home folder (typically /user/username)
The .ssh is a hidden file that contains your keys after you generate them.
The -X means transfer X windows to the new session and is optional. It allows you to run graphics or gui programs over the connection if you want to.
The user@system is your user id on the remote system and the name of that system.
/Len
WT6G

]]> By: Kirrus http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-3554 Kirrus Fri, 25 Jan 2008 09:52:06 +0000 http://ubuntu-tutorials.com/?p=266#comment-3554 Just apply the authoried key to whatever user you want to login as on the remote system, so for example, if I'm "Kirrus" on my machine, and I want to be "fred" on the remote machine, I'd do: scp ~/.ssh/id_dsa.pub fred@myserver.com:/home/fred/ Just apply the authoried key to whatever user you want to login as on the remote system, so for example, if I’m “Kirrus” on my machine, and I want to be “fred” on the remote machine, I’d do:
scp ~/.ssh/id_dsa.pub fred@myserver.com:/home/fred/

]]> By: Fernando http://ubuntu-tutorials.com/2007/02/05/unattended-ssh-login-public-key-ssh-authorization-ssh-automatic-login/#comment-829 Fernando Tue, 06 Nov 2007 06:40:40 +0000 http://ubuntu-tutorials.com/?p=266#comment-829 Nice guide. however, I find some information is missing. What happens if I'm joe@localhost in the local machine, but I want to log-in as "johndoe@ssh.somehost.com" ? All the examples I've seen assume that username is the same on both the local system and the remote ssh system. Or isn't that the case? Best FC Nice guide.

however, I find some information is missing.

What happens if I’m
joe@localhost in the local machine, but I want to log-in as “johndoe@ssh.somehost.com” ?

All the examples I’ve seen assume that username is the same on both the local system and the remote ssh system.

Or isn’t that the case?

Best
FC

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