Many months ago, when I installed Mandrake 9, I configured iptables with a really nice set of rules.
Friends tested my box for security, and it was iron-clad solid.
Every once in a while, I go to Gibson's site for a firewall test and a port scan. Always ok.
Today I was back at Gibson's site for a regular check, and out of curiosity I programmed my iptables to be wide open:
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
I then went through the firewall test and port scan test, and guess what? I was STILL impregnable, and my ports were still stealth.
I'm thinking: "What the ... ???"
So, off I go to sygate and a bunch of other firewall testing sites, and they all show me rock solid.
Anybody knows what this is all about?
I'm wondering if there isn't some kind of default Linux kernel, built-in firewall still working in the background that I'm not aware of ? ? ?