nanog mailing list archives

Re: PlayStationNetwork blocking of CGNAT public addresses


From: Florian Weimer <fw () deneb enyo de>
Date: Sun, 18 Sep 2016 15:56:30 +0200

* Rich Kulawiec:

For example: if the average number of outbound SSH connections
established per hour per host across all hosts behind CGNAT is 3.2,
and you see a host making 1100/hour: that's a problem.  It might be
someone who botched a Perl script; or it might be a botted host
trying to brute-force its way into something.

If you do this, you break Github.

(If I guess Simon's network correctly, then I've seen reports which
suggest that they might already be doing this.)


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