Firewall: Need Advice

[E&Erdem <erdem@turkcelinux.net>]

Hi,
I've been using iptables (or i assuming that). But at boot time it gives
an error: "Aborting iptables load: unknown rulesets "active" ". I
couldn't find the problem. I searched via google, and found
dpkg-reconfigure iptables. But it didn't help. I read a lot of iptables
documents. But i think i lost some points, because i don't understand
something. 

Before this i want to ask that, do i need firewall? Yes, i know this is
very important tool for whose, who taking care about security. And i can
say i'm a paranoid about security. But all of my ports closed. There
isn't any service listen. But sometimes i need httpd and ssh.

This machine shares internet connection with a small network. So i have
to becareful about this. 

Thanks now...

P.S: Sory, my English is not enough (especially technical) for telling
my problem in a clear way. I hope you can understand.  

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 E&Erdem
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