SSH hacked?
Mark Haney
mhaney at ercbroadband.org
Thu Jan 15 13:21:48 UTC 2009
Res wrote:
>>>
>> I fail to see how that's incorrect, then? I occasionally see attempts
>> to break in with root, but not that often. That wasn't really my point.
>> The point is that not allowing ANY privileged account login access via
>> any method effectively makes breaking in with them impossible. This is
>
> Breaking in with them perhaps, but what if they get in under a user, a
> user that happens to be auth'd to su/sudo/whatever, never be complacent
> about possible threats.
Of course, I do not dispute that. I'm talking about limiting the number
of possible attack vectors. Hacking root gives a hacker full rights.
Exploiting a user account still means the hacker has find a way to get
root privileges. Granted if that user has sudo rights, that's just as
bad, but not every user account has that right, so it's not a guarantee.
>
>> something we learned a LONG time ago. Blocking everything and opening
>> what you need is much easier than having it wide open and then trying to
>> close the barn door.
>
> Absolutely which is why all but 2 servers have ssh denied on border and
> core routers allowing only those of us who have that right to gain entry
> from home etc (there is a reason those 2 allow public access, and
> naturally there root passwords, although identical, are nothing like the
> main network root pass's)
>
--
Frustra laborant quotquot se calculationibus fatigant pro inventione
quadraturae circuli
Mark Haney
Sr. Systems Administrator
ERC Broadband
(828) 350-2415
Call (866) ERC-7110 for after hours support
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