[Gllug] Selective SSH logins

John Edwards john at cornerstonelinux.co.uk
Tue Aug 26 18:26:13 UTC 2008


On Tue, Aug 26, 2008 at 06:35:52PM +0100, Jose Luis Martinez wrote:
> 2008/8/26 Daniel P. Berrange <dan at berrange.com>:
>  <snip>
> 
>> And if you have  NFS home directories, and aren't requiring Keberized NFS
>> clients, then SSH keys are worse than useless thanks to NFS' complete lack
>> of a security model (ie it trusts clients to be truthful wrt to UIDs). And
>> if you are requiring Kerberized NFS, then you can just use GSSAPI logins
>> anyway, so don't need SSH keys.  SSH keys + NFS home dirs == recipe for
>> disaster.  Of course non-Kerberized NFS + password login is no better
> 
> In a previous job of mine NFS + ssh keys was a grave offence that
> could lead to dismissal, a justified policy if you ask me.

Even when protected by a passphrase?

There's a lot worse that can happen when you share your home
directory over NFS, such as adding things to .bashrc, for 
example a key logging shell which will capture your passwords.


-- 
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|    John Edwards   Email: john at cornerstonelinux.co.uk    |
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