Wow, that takes a lot... Really hard to understand all this stuff, but i do my best. Like you said, i have in this section a bigger lack of knowledge but i am learning. I hope i can ask this (maybe) silly question to you:
Now, i installed the KUAL Firewall, but after loading it i cannot create a connection to wlan. Now, you maybe answer: "then make a rule to access it", but I dont know how.

I know there is a command like iptables and a file at /etc/sysconfig/iptables but i am not sure what what I should add.
A other question is, what does the Kindle with the KUAL Firewall what the Kindle had not before done and is the iptables file for the KUAL Firewall relevant or where i could add rules for the firewall?
Regards
Bagerfahrer