All of the suggestions are graciously accepted, however, I was actually asking what I was doing wrong with iptables, and why, with the rules I put in place, someone was still able to connect to my machine.
I understand there might be better ways, but if I don't understand what I did wrong last time, how am I going to figure out how to deny all, then allow selected, ehrn I can't seem to allow all and deny selected.
There must be a misunderstanding on my part about how iptables are supposed to work.
-chuck