How can I limit some port according to ethernet card MAC?

Gavin Cameron ggcameron at
Fri Jan 7 20:43:24 PST 2005

IPFW allows you to filter based on MAC addresses.

man ipfw


On Sat, 8 Jan 2005 12:17:25 +0800, heath, Chia Hui Chen
<heath0504 at> wrote:
> Hello,
> I use FreeBSD 5.2.1 as NAT.
> How can I limit some port (packet in and out) according to ethernet card MAC
> ?
> Because we use dhcpd, and the IP is dynamic, so I wanna limit it by MAC.
> What can I do? Thanks for your response!
> Best Regards,
> - heath
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