I'm new to OpenWRT. I read that firewall3 (fw3) is the default app that works with UCI and it is some kind of wrapper for iptables.
On my SDK, through menuconfig, I selected iptables and iptables6 but when I burn image on my device, fw3 is missing as also /etc/config/firewall and /etc/init.d/firewall.
What package do I need to install? In my menuconfig there I didn't find any package named fw3.
Can anyone help me with this?
You need to install firewall package (located in Base System section)