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Re: FYI: possible infringement of patent by ipf/pf

To: misc_(_at_)_openbsd_(_dot_)_org
Subject: Re: FYI: possible infringement of patent by ipf/pf
From: Daniel Hartmeier <daniel_(_at_)_benzedrine_(_dot_)_cx>
Date: Sun, 14 Jul 2002 16:14:59 +0200

On Sun, Jul 14, 2002 at 09:34:14AM -0400, Richard Welty wrote:

> as for prior art, most routers well before 1995 had briding modes. did
> cisco (or some other brand) have provision for using their ACLs when in
> bridging mode?

Drawbridge did rule based filtering in bridge mode in 1993, and it can
'mirror' selected packets to a monitoring interface:

  ftp://net.tamu.edu/pub/security/TAMU/

References:
- FYI: possible infringement of patent by ipf/pf
  - From: Darren Reed
- Re: FYI: possible infringement of patent by ipf/pf
  - From: Richard Welty

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