I am trying to filter on MAC addresses and have alittle problem.
I use a rule like the following
/sbin/iptables -A MACALLOW -p ALL -i eth0 -m mac --mac-source 'MACADDRESS' -j ACCEPT
Where MACADDRESS is replaced by the MAC CODE of the machine.
However, the MAC address that the Network card uses is not being used by IPTables. It tries to use a larger MAC Code, which appears to be two mac addresses pinned together.
So if I use the MAC code of 00:10:5a:14:50:db, it gets rejected because IPTables uses the MAC Code of 00:09:5b:1b:52:77:00:10:5a:14:50:db:08:00
Which does not match obviously. So why is IPTables using this, and how can I get round it to use IPTables MAC Code rules?
Many Thanks for any help you can offer
Mike.
