annoying brute force attack attempt using ssh

Patrick O'Callaghan pocallaghan at gmail.com
Thu May 15 23:14:14 UTC 2008


On Thu, 2008-05-15 at 17:45 -0500, Mikkel L. Ellertson wrote:
> Patrick O'Callaghan wrote:
> > On Thu, 2008-05-15 at 14:41 -0700, Wolfgang S. Rupprecht wrote:
> >> "jeff emminger" <jemminger at gmail.com> writes:
> >>> isn't password authentication insecure?  why not set
> >>> "PasswordAuthentication no" and use ssh keys, and maybe port-knocking
> >>> too
> >> My feeling exactly.  You have no control over how stupid a password
> >> users will pick.  The only control you have is to not allow passwords
> >> in the first place and insist on at least a 1k-bit (hopefully random)
> >> key.
> > 
> > Then you just have to hope the users' machines aren't vulnerable ...
> > 
> > poc
> > 
> Or at least they use a pass-phrase protected key, and a good phrase.

And aren't root-kitted and don't have a keyboard logger ... there's no
end to how paranoid you can be, and not everything is valuable enough to
be worth the hassle. That's what makes security interesting :-)

poc




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