Limit DHCP requests with iptables - problem: Router
Alex Bligh
alex at alex.org.uk
Mon Feb 7 16:25:45 UTC 2011
--On 7 February 2011 15:31:46 +0100 Juergen Northe
<juergen.northe at googlemail.com> wrote:
> oops. Not (A)ppend but (I)nsert should work. I have not tried it yet:
>
> iptables -I INPUT -i eth0 -p udp -m udp -m multiport -m mac
> --mac-source XX:XX:XX:XX:XX -d 255.255.255.255 --dports 68,67 -m
> state --state NEW -j REJECT
That won't work because all his dhcp queries come with the same
MAC address - the router which is forwarding them.
--
Alex Bligh
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