Hello fellow computer enthusiasts , Im am attempting to filter MAC addresses
using iptables , I have 3 MAC addresses entered into the script I plan to run , the 3 lines are allow port 22 MAC ******** , ect , but I need a little help with the Drop commands , If not specifed MAC addresses 1 ,2 or 3 port 22 drop ??
Does anyone have some help for da sceaser ???

I am running Redhat Enterprise Linux 5 ,

I don't know the exact command, but I'm guessing that iptables is similar to ipfw from FreeBSD in how it applies rules. What you'll want to do is put the three allow commands as the first three rules, then the final filter will be to drop everything else. I don't know what it would look like exactly, but that is likely how it would be done. It's also possible that the lower number commands have lower priority (I forget as I haven't ever really used it), in which case just switch the order of your commands.