Hi

I am using iptables for my firewall on this server which is meant to act as
a samba file server for a bunch of windows xp machines (any good references
for that, I have seen the the uky.edu link ?), and a mailserver.

I wish to limit ssh and samba access to this machine based on the MAC
address of machines. The problem is that all these machines get their IP
address via DHCP from some other server, so I cannot use their current IP
addresses to write the rule.

Is the above possible ? If so, how ?

Thanks.