From: Jim Laurino <nfcan.x.jimlaur@dfgh.net>
To: netfilter@lists.netfilter.org
Subject: Re: iptables/mac address filtering question (nfcan: to exclusive)
Date: Sat, 11 Aug 2007 14:55:51 -0400 [thread overview]
Message-ID: <1186858551l.31324l.0l@soapy> (raw)
In-Reply-To: <1b5f39a10708111046w55a4b00axb39c018a0ab54fb9@mail.gmail.com> (from +nfcan+jimlaur+0d697027d9.jsprenkle#gmail.com@spamgourmet.com on Sat Aug 11 13:46:51 2007)
On 08/11/2007 01:46:51 PM, Jay Sprenkle - jsprenkle@gmail.com wrote:
....
> I've put in a rule in my iptables chain but notice when I try to
> connect it's rejected. The mac address I'm getting is not the same as
> what iwconfig reports on my device. If a packet is passed through
> routers on it's way to my box do they change the mac address of the
> packet?
Yes, the MAC address is lost when a packet leaves an ethernet segment.
Recall that a MAC address is how devices sharing an ethernet address each other.
Routers operate on IP addresses and do not use or preserve ethernet addresses.
Maybe bridging, if you could do that, would preserve the MAC address.
Regards,
--
Jim Laurino
nfcan.x.jimlaur@dfgh.net
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prev parent reply other threads:[~2007-08-11 18:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-11 17:46 iptables/mac address filtering question Jay Sprenkle
2007-08-11 18:41 ` Канивец Николай
2007-08-11 18:55 ` Jim Laurino [this message]
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