Counting packets?

To: netbsd-users%netbsd.org@localhost
Subject: Counting packets?
From: Paul Goyette <paul%whooppee.com@localhost>
Date: Tue, 22 Apr 2014 07:40:21 -0700 (PDT)

Is there a quick way (using pf?) to simply count packets/bytes thatmatch specific criteria, without modifying them in any way?


My specific case is to count SMTP traffic stats...


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