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Re: I don't need no stinking firewall!
From: Henry Yen <henry () AegisInfoSys com>
Date: Mon, 11 Jan 2010 15:52:05 -0500

On Thu, Jan 07, 2010 at 22:55:25PM -0800, Jay Hennigan wrote:
Nenad Andric wrote:
On Tue Jan 05, 2010 at 01:04:01PM -0800, Jay Hennigan <jay () west net> wrote:

Or better:
    - Allow from anywhere port 80 to server port > 1023 established

 Adding "established" brings us back to stateful firewall!

Not really.  It only looks to see if the ACK or RST bits are set.  This 
is different from a stateful firewall which memorizes each outbound 
packet and checks the return for a match source/destination/sequence.

That's (cisco) reflexive access lists.

-- 
Henry Yen                                       Aegis Information Systems, Inc.
Senior Systems Programmer                       Hicksville, New York


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