Re: MAC addres and iptables

[Sasa Stupar <sasa@stupar.homelinux.net>]

Sasa Stupar pravi:

> Antony Stone pravi:
>
>> On Sunday 29 February 2004 1:45 pm, Sasa Stupar wrote:
>>
>>  
>>
>>> Hi!
>>>
>>> I have a working router for my network. Is it possible to allow access
>>> to the router by defining a MAC address with iptables?
>>> So basically I need to allow only some users to access internet and not
>>> all. So I want to allow access only to users with certain MAC address
>>> and deny all others.
>>>
>>> Is this possible with iptables and how?
>>>   
>>
>>
>> Try something like:
>>
>> iptables -A INPUT -s a.b.c.d -m mac --mac aa:bb:cc:dd:ee:ff -j ACCEPT
>>
>> Where a.b.c.d is the IP address and aa:bb:cc:dd:ee:ff is the MAC 
>> address of the machine you want to allow access to the firewall system.
>>
>> You need to have compiled mac address matching into your kernel, or 
>> loaded the appropriate module.
>>
>> See "man iptables" for more info.
>>
>> Regards,
>>
>> Antony.
>>
>>  
>>
>
> Thanx for the answer. Since I am new to linux and iptables: how do I 
> know if mac address matching is compiled or not in the kernel and what 
> is the responsible module?
> BTW, I am running on RH8 with iptables 1.2.9.
>
> Regards,
> Sasa
>
>
I have done this command and it doesn't work. I have changed the rule to:

iptables -A INPUT -s ! a.b.c.d -m ! mac --mac aa:bb:cc:dd:ee:ff -j  DROP

then it works BUT as soon as I add another ip and mac address then I am 
blocked out.

What am I doing wrong here?

Regards,
Sasa