Which of the following is true regarding the Rule Base?

A.
A security policy is implemented by means of ordered set of rules in the security Rule Base

B.
Rule parameters include the source and destination of the communication, the services and protocols

C.
A well defined security policy is essential to an effective security solution

D.
The Rule Base is a collection of rules that determine which communication traffic is permitted

E.
The fundamental principle of the Rule Base is that all actions that are not explicitly permitted are not necessarily prohibited