20-30Gbps UDP 1720 traffic appearing to originate from CN in last 24 hours

Tue Jul 21 11:16:53 UTC 2015

	I'm reminded of the "the russians are hacking our water system"
stories from a few years back, when it turned out the water system
adminstrator was on vacation in russia.

	often traffic comes from unexpected locations.  perhaps you
should fail-closed with good business practices to open things up.
perhaps you fail-open then mitigate risk by using a blocklist.

	my suggestion is that if you didn't live through the days
of the bogon lists, which were later allocated to RIRs, a block
list is likely not the right approach if you truly working on
security posture.

	- Jared

On Mon, Jul 20, 2015 at 09:50:44PM +0100, Colin Johnston wrote:
> blocking to mitigate risk is a better trade off gaining better percentage legit traffic against a indventant minor valid good network range.
> 
> 
> Sent from my iPhone
> 
> > On 20 Jul 2015, at 21:20, Valdis.Kletnieks at vt.edu wrote:
> > 
> > On Mon, 20 Jul 2015 21:12:33 +0100, Colin Johnston said:
> >> source user to use phone contact and or postal service to establish contact
> > 
> > And your phone and postal addresses are listed *where* that Joe Aussie-Sixpack
> > is likely to be able to find?
> > 
> > (Hint 1: If it's on your website, they can't find it.)
> > 
> > (Hint 2: Mortal users have never heard of WHOIS or similar services)
> > 
> > And what are the chances that after 3-4 days of unreachable, the user will
> > simply conclude you've gone out of business and you've lost a customer/reader
> > to a competitor?

-- 
Jared Mauch  | pgp key available via finger from jared at puck.nether.net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.