[Watford] SSH Questions

[Mark Stewart]

thanks Alain - your document is a useful faq but I'm looking at a policy to
prevent DBA's etc so they don't use passwordless keys or leave ssh-agent
running or other ssh bad practices. Users can create keys anywhere and I'm
powerless to stop how they create them.

If a hacker got hold of password less keys they would control servers at
ease.

I can't see options for sshd that lets your prevent you accepting
passwordless keys or find any commercial/open software that does this with
OpenSSH.

Any advice appreciated.

2008/9/16 Alain Williams <addw at phcomp.co.uk>

> On Tue, Sep 16, 2008 at 10:12:47AM +0100, Mark Stewart wrote:
> > Hi Everyone,
> >
> > Does anyone know how to prevent the use of passwordless ssh keys? I want
> to
> > prevent users authenticating without a password.
> >
> > In fact if anyone know of any ssh policing tools/faqs that would be
> really
> > usefull. I find it simple securing a server, but when you have 100's of
> > linux desktops I'm unsure on the best way to stop users leaving ssh-agent
> > running all the time or using passwordless keys.
> >
> > Discussion/advise appreciated.
>
> I have had a write up about this for some years:
>
>
> http://www.phcomp.co.uk/TechTutorial/HOWTOs/ssh_passwordless_login.php
>
> Comments/suggestions gratefully received.
>
> --
> Alain Williams
> Linux Consultant - Mail systems, Web sites, Networking, Programmer, IT
> Lecturer.
> +44 (0) 787 668 0256  http://www.phcomp.co.uk/
> Parliament Hill Computers Ltd. Registration Information:
> http://www.phcomp.co.uk/contact.php
> Chairman of UKUUG: http://www.ukuug.org/
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