tech-net: Can ipf filter TCP packets based on the ACK bit?

Subject: Can ipf filter TCP packets based on the ACK bit?
To: None <netbsd-help@NetBSD.ORG>
From: None <daemond@ibm.net>
List: tech-net
Date: 11/24/1997 16:49:34

Hello all,

I'm curious to know if ipf can filter TCP packets based on whether or not
the ACK bit is on or off and if so how?  Can someone send me an example? 
Thanx.  L8r.

Geoff
daemond@ibm.net