Quite right none of iptable's supporting modules got compiled. How might someone install gentoo in such a way that all four of the iptables support modules get compiled? I wasn't able to build those as modules after the fact. This is a real security deficiency in gentoo since I've not been able to find any gentoo tutorial or howto using google that deals with this topic. What's more, slackware and debian don't have this problem on default installations with speakup. Doing iptables -nL on either of these other systems when iptables hasn't been otherwise adjusted shows all three chains as set to ACCEPT which is the iptables default before any rules get defined. If someone thought they'd like to use gentoo as a bootable I'd say fine so long as you have no data anywhere else on the machine to protect or anywhere else on the network since iptables and supporting modules aren't on the livecd and must be downloaded.