where is the file location of iptable rules (nf_conntrack)
 

I'm using Linux Mint and I wrote some rules using iptables but I want to know where those rules are stored.

Under /proc/net I only have nf_conntrack and nf_conntrack_expect but both are empty and I have no ip_conntrack located anywhere on the filesystem. So where are the iptable rules? Here is a screenshot of what I have under /proc/net

http://img704.imageshack.us/i/68614255.jpg

where it's all at
 

A quick lesson of the file system structure
/proc is were the kernel info is
/usr is were all the user programs are kept
/etc is were all configuration files and settings are kept
hope it helps