21 UPDATE: Almost advanced firewall filter rules.
UPDATES: This lesson supports lesson-20 and will be fully explained in Lesson-23. This lesson covers many filter rule considerations that will decrease the complexity of Lesson-23. This lesson also provides insight into efficient filter rule strategy. Lesson-22 will discuss the terms interface, interface-list, bridge, ports, and wlan and how to use them all together. This Lesson-22 info will be applied in Lesson-23.