Hi All, I have list of Mac addresses and also have range of IP addresses.. how to set iptables with conditions below: Range of IP addresses: 172.16.2.241 to 172.16.2.250 List of MAC Addresses: (stored in a file named maclist) 01:02:03:04:05:0a 01:02:03:04:05:0b 01:02:03:04:05:0c 01:02:03:04:05:0d 01:02:03:04:05:0e 01:02:03:04:05:0f 01:02:03:04:05:1a 01:02:03:04:05:2a 01:02:03:04:05:3a 01:02:03:04:05:4a When Incoming package from the ranged IP address (172.16.2.241 to 172.16.2.250) then the mac address must be checked from the list of MAC Address, if the MAC Address matched then it allowed otherwise it will be rejected or dropped.. please advise thanks a lot in advance Regards Winanjaya