OK, I see what you mean. How about this - don't know if it exactly
meets what you need, but it should get you close:
If you're using the openssh 4 ssh server (and this is likely present in
earlier versions, I haven't checked), set PermitRootLogin to
"forced-commands-only". This allows root login with public key
authentication only, and only when a specific command has been specified
for execution.
Then, make a keypair for root, and put the private key only on the one
trusted admin box (with appropriate. Add to the start of the relevant
line in .ssh/authorized_keys2 file the limitation:
from="trustedhost.my.domain"
Optionally, you can apply other limits to the use of the key you've
created. For example, limit the command(s) that can be run with that
key, by adding
command="/path/to/command"
to the start of the relevant line of root's .ssh/authorized_keys2 file
see the section AUTHORIZED_KEYS FILE FORMAT in the sshd manpage for the
list of possibilities.
Hope that helps
Mark
-----Original Message-----
From: daniel.engelsen
Sent: May 9, 2005 08:51
To: Mark Senior
Subject: RE: remote ssh for root
I want to have one host that is trusted by the many hosts.
From this host, I want to be able to perform a remote ssh to
the many boxes as root; however, I do not want to allow
direct root login on any of the servers.
If you want to be root, I want the user to have to su to the root id.
Also, I do not want to limit what comamnds I can run as root
on these boxes from this trusted host.
Thanks,
Dan
Mark Senior
To: Daniel Engelsen
Subject: RE: remote ssh for root
I'm sorry, could you clarify what you mean exactly? I'm not
sure what you mean, to ssh as root, without logging in as
root via ssh.
I suppose just using su or sudo wouldn't cut it?
Thanks
Mark
-----Original Message-----
From: daniel.engelsen
Sent: May 6, 2005 10:22
To: secureshell@securityfocus.com
Subject: remote ssh for root
I would like to setup a trusted host that utilizes ssh;
however, I do
not want root to be loginable. If I set PermitRootLogin to
no, then
the remote ssh function stops as well. Does anyone know of
a way to
be able to do remote ssh's as root without allowing root to
be able to
login?
I am using AIX versions 5.1, 5.2, and 5.3, and we are running ssh
versions
3.6 and 3.8.
Any ideas would be greatly appreciated.
Thanks,
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