Iptables question

Hello! I’m reading article about iptables which you recommended

https://www.frozentux.net/iptables-tutorial/iptables-tutorial.html

In Chapter 5 Kernel Setup has list of configurations: CONFIG_IP_NF_CONNTRACK , CONFIG_IP_NF_FTP etc. I don’t understand where is configurations in Kali Linux?

These are variables compiled into the kernel with .config but Kali should have everything you need already.

More info here on recompiling the kernel.

http://docs.kali.org/development/recompiling-the-kali-linux-kernel

http://blog.serverbuddies.com/enable-iptables-support-in-linux-kernel/