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Date:      Wed, 3 Aug 2005 07:56:40 -0300
From:      AT Matik <asstec@matik.com.br>
To:        freebsd-ipfw@freebsd.org
Subject:   Re: Another bug in IPFW@ ...?
Message-ID:  <200508030756.41257.asstec@matik.com.br>
In-Reply-To: <200508030919.j739JPAL010571@lurza.secnetix.de>
References:  <200508030919.j739JPAL010571@lurza.secnetix.de>

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On Wednesday 03 August 2005 06:19, Oliver Fromme wrote: 
>
>  > out and xmit is probably exactly the same
>
> No, it's not.  "out" just says that this rule matches only
> outgoing packets.  It doesn't specify anything about inter-
> faces or addresses.
>

packages catched by xmit IF are catched with out as well
"xmit any" probably is another expression for "out"
I do not see your point here


>  > still especially as you set
>  > src-ip and dst-ip so the interface where this packages are xmit
>  > is defined by the routes
>
> src-ip and dst-ip can be both faked and need not have

good, then you do not catch them anyway by src|dst[-ip] unless you 
deny all but the src-ip you want to pass 

and a fake dst-ip don't know who would do that but certainly an 
interesting idea ...


Hans











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