Yup you can have a key for each user.  Take a look at:
http://suso.org/docs/shell/ssh.sdf

Nate

On Mon, 2008-02-04 at 20:00 +0100, Jostein Martinsen-Jones wrote:
> Yes, i did change the root password asap!
> 
> I would much like to see a configuration snippet on how to use
> rsa-keys.
> Can I use several rsa-keys  so i can login as different users?
> 
> 2008/2/4, Nathan McBride <[EMAIL PROTECTED]>:
>         Yup sure is.  I have setup my vyatta router to only allow rsa
>         keys.
>         Did you change your root password from 'vyatta'?
>         
>         Nate
>         
>         On Mon, 2008-02-04 at 18:13 +0100, Jostein Martinsen-Jones
>         wrote:
>         > Hi
>         > I am only using ssh. Is it possible to have rsa-keys for all
>         users,
>         > including vyatta?
>         > Maybe the attackers managed to brute force my password?
>         > This is very anoying since I have to reinstall the machine
>         tomorrow
>         > and doesn't know what went wrong. Haven't had time to check
>         the logs
>         > either.
>         >
>         > How does the user configuration look for you other guys and
>         girls?
>         >
>         >
>         > 2008/2/4, Stig Thormodsrud <[EMAIL PROTECTED]>:
>         >         Hi Jostein,
>         >
>         >
>         >
>         >         Are you using telnet or ssh to access the
>         box?  Using telnet
>         >         in not secure from a public network as the
>         username/password
>         >         is in clear text.
>         >
>         >
>         >
>         >         stig
>         >
>         >
>         >
>         >
>         >
>         ______________________________________________________________
>         >         From:[EMAIL PROTECTED]
>         >         [mailto:[EMAIL PROTECTED] On
>         Behalf Of
>         >         Jostein Martinsen-Jones
>         >         Sent: Monday, February 04, 2008 2:43 AM
>         >         To: Dave Strydom
>         >         Cc: vyatta-users@mailman.vyatta.com
>         >         Subject: Re: [Vyatta-users] Vyatta box hacked?
>         >
>         >
>         >
>         >
>         >         Jupp, I think i have an intruder, the ip
>         202.172.171.217 isn't
>         >         known to me at all.
>         >         I am the only one knowing the root password, and I
>         have not
>         >         logged in those times that last are showing.
>         >
>         >         root     pts/0        202.172.171.217  Mon Feb  4
>         05:21 -
>         >         07:38  (02:16)
>         >         root     pts/0        202.172.171.217  Sat Feb  2
>         14:54 -
>         >         16:05  (01:11)
>         >         root     pts/0        202.172.171.217  Fri Feb  1
>         23:51 -
>         >         23:57  (00:05)
>         >         root     pts/0        202.172.171.217  Fri Feb  1
>         13:49 -
>         >         17:18  (03:29)
>         >
>         >         How did this happen?
>         >         I changed all the passwords on install to 8
>         character long,
>         >         using numbers and letters.
>         >         This is from my old config, are plaintext-password
>         supposed to
>         >         be blank?
>         >
>         >         # show system login
>         >             user root {
>         >                 authentication {
>         >                     encrypted-password: "$1$nZxxxxxxsgXC/"
>         >                     plaintext-password: ""
>         >                 }
>         >             }
>         >             user vyatta {
>         >                 authentication {
>         >                     encrypted-password: "$1$yyyyyyyyyyyt0/"
>         >                     plaintext-password: ""
>         >                 }
>         >             }
>         >
>         >         2008/2/4, Dave Strydom <[EMAIL PROTECTED]>:
>         >
>         >         Login to your router as root and run:
>         >
>         >         # last | more
>         >
>         >         and see if there are any logins to your machine
>         which you do
>         >         not recognize.
>         >
>         >
>         >
>         >         On Feb 4, 2008 12:05 PM, Jostein Martinsen-Jones
>         >         <[EMAIL PROTECTED]> wrote:
>         >         > I got mail from another linux user today. He
>         complained
>         >         about login attempts
>         >         > to his boxes, from my vyatta router!
>         >         > Am I haxored or what? This is from his log and the
>         "ip"
>         >         12.34.56.78 are my
>         >         > router.
>         >         >
>         >         > Feb  2 18:11:39 88.191.40.120 sshd[30444]:
>         (pam_unix)
>         >         authentication
>         >         > failure; logname= uid=0 euid=0 tty=ssh ruser=
>         >         rhost=12.34.56.78  user=root
>         >         > Feb  2 18:11:40 88.191.40.120 sshd[30444]: Failed
>         password
>         >         for invalid user
>         >         > root from 12.34.56.78 port 42492 ssh2
>         >         >  Feb  2 18:11:46 88.191.40.120 sshd[30450]: User
>         root from
>         >         12.34.56.78 not
>         >         > allowed because not listed in AllowUsers
>         >         > Feb  2 18:11:46 88.191.40.120 sshd[30450]:
>         (pam_unix)
>         >         authentication
>         >         > failure; logname= uid=0 euid=0 tty=ssh ruser=
>         >         rhost=12.34.56.78  user=root
>         >         >  Feb  2 18:11:48 88.191.40.120 sshd[30450]: Failed
>         password
>         >         for invalid user
>         >         > root from 12.34.56.78 port 42926 ssh2
>         >         > Feb  2 18:11:54 88.191.40.120 sshd[30456]: User
>         root from
>         >         12.34.56.78 not
>         >         > allowed because not listed in AllowUsers
>         >         >  Feb  2 18:11:54 88.191.40.120 sshd[30456]:
>         (pam_unix)
>         >         authentication
>         >         > failure; logname= uid=0 euid=0 tty=ssh ruser=
>         >         rhost=12.34.56.78  user=root
>         >         > Feb  2 18:11:56 88.191.40.120 sshd[30456]: Failed
>         password
>         >         for invalid user
>         >         > root from 12.34.56.78 port 43408 ssh2
>         >         >  Feb  2 18:11:56 88.191.40.120 sshd[30494]:
>         refused connect
>         >         from 12.34.56.78
>         >         > (12.34.56.78)
>         >         > _______________________________________________
>         >         > Vyatta-users mailing list
>         >         > Vyatta-users@mailman.vyatta.com
>         >         >
>         http://mailman.vyatta.com/mailman/listinfo/vyatta-users
>         >         >
>         >         >
>         >         _______________________________________________
>         >         Vyatta-users mailing list
>         >         Vyatta-users@mailman.vyatta.com
>         >
>         http://mailman.vyatta.com/mailman/listinfo/vyatta-users
>         >
>         >
>         >
>         >
>         >
>         >
>         > _______________________________________________
>         > Vyatta-users mailing list
>         > Vyatta-users@mailman.vyatta.com
>         > http://mailman.vyatta.com/mailman/listinfo/vyatta-users
>         
> 

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