Which of the following are true concerning firewalls on Linux? Each correct answer represents a complete solution. Choose all that apply. This type of question contains radio buttons and checkboxes for selection of options. Use Tab for navigation and Enter or space to select the option. A option A They employ configuration files for persistency. B option B They use iptables embedded in the Linux kernel. C option C They inspect network packet control information. D option D They detect malicious behavior. E option E They use ACLs for allowing packets.