[Watford] SSH Questions

[Neel Upadhyaya]

[mark] do you mean you store the path to the authorized_keys file in ldap?
Or the actual list of public keys?

Yes the keys are all stored in ldap against the user accounts allowing
central key management,

2008/9/16 Mark Stewart <markwstewart at gmail.com>

> do you mean you store the path to the authorized_keys file in ldap? Or the
> actual list of public keys?
>
>
> On 16/09/2008, Neel Upadhyaya <bahulneel at gmail.com> wrote:
>>
>> You can offload this to ldap.  We do that here.
>>
>> 2008/9/16 Mark Stewart <markwstewart at gmail.com>
>>
>>> good - point. I want to avoid a PKI style role out - I'm looking at
>>> ways of locking/changing location of the authorized_key file.
>>>
>>> On 16/09/2008, Yvan Seth <watford.lug.org.uk at malignity.net> wrote:
>>> > On Tue, Sep 16, 2008 at 03:29:54PM +0100, Mark Stewart wrote:
>>> >> Hi Magnus, thanks for your input. I think that what Yvan said is true
>>> >> and that it will come down to policy even if I distributed the keys
>>> >> myself as users can update their own authorized_keys file in their
>>> >> .ssh folder. I guess if I get time I could police by locking down the
>>> >> authorized_keys file so users can't update it but will involve some
>>> >> testing.
>>> >>
>>> >> I could also check the authorized key file to ensure it only has keys
>>> >> generated by me inside it. mmmm, I need to go and do some testing.
>>> >
>>> > Alas, Magnus's suggestion doesn't quite work.  You can distribute
>>> > pre-passphrased keys but then your users (who obviously must know the
>>> > passphrase) can "unwwap" the key to an unprotected version (see the
>>> > ssh-keygen manpage.)  Assuming you have mischievous users.
>>> >
>>> > There is another completely different option... use an external key
>>> > dongle of some kind.  See the -I option for the command-line SSH
>>> client.
>>> > I've never seen this in action and have no idea what the caveats are.
>>> > Top Google links for "ssh smartcard":
>>> >     http://smartcard-auth.de/ssh-en.html
>>> >     http://www.faqs.org/docs/Linux-HOWTO/Smart-Card-HOWTO.html
>>> > (Question for further research: what's to stop someone from simply
>>> > dumping the key data from the "smart" card?)
>>> >
>>> > -Yvan
>>> >
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>>
>>
>>
>> --
>> MCSE is to computers as McDonalds Certified Chef is to fine cuisine.
>>
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-- 
MCSE is to computers as McDonalds Certified Chef is to fine cuisine.
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