Shorewall
 

I was uncertain where this question belongs, but decided to go for mandrake-forum since both are bundled. The problem is:

I have set up my mandrake 9.2 up and running and the main idea of the machine was to work as a storage space for my computers (mainly keep mp3s somewhere so I don't have to keep the same ones at every comp). After some information hunting and stuff I got the shorewall set pretty much the way I wanted, but I couldn't find a way to add a zone to the wall with specific ip-addresses, or even better; mac-addresses. You see, my ISP allows 5 public DHCP-addresses to every ADSL-connections so now I have 4 computers running here at home, and at times their addresses change and they usually are from different subnets too (so that mask 255.255.255.0 won't work). As I'm running samba on the mandrake, I wouldn't want it to be allowed to any other ips/macs than those of my own. Can someone help me do this with the help of shorewall, or should I just dump SW and try to learn me some iptables (thats the advice some of my "friends" have given me).