On Mon, Apr 1, 2013 at 9:44 AM, Shane Mullins <tsmulli...@gmail.com> wrote:
> What do you guys do when hosts scan your network?  Some cases are obvious,
> we had a large US University scanning our network for open http servers.
> Contacted them and they took care of the issue.

  Generally speaking, I might block them, but currently I prolly
wouldn't even do that.  (It matters that we don't have a large public
netblock and so can't easily discern a bulk scan from someone
mistyping an IP address or something.)  The Internet is a public
place, and while scanning is often nefarious, it's not against any
rules in many cases.

  I'm certainly not going to bother contacting a network owner when it
might not even violate any Terms of Service.  It has to be abuse
before the abuse desk cares.

  By analogy: A guy walking along the street looking at houses may be
suspicious, but in most Western countries, isn't breaking any laws.
If I call the cops they might send a cruiser, but if I make a habit of
it they'll just mark me down as a paranoid nuisance.

  OTOH, if the same source e.g. starts repeatedly trying to
brute-force our SSH server, *that* I might do something about.

-- Ben

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

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