Câu 25: SY0-401: CompTIA Security+

A network administrator wants to block both DNS requests and zone transfers coming from outside IP addresses. The company uses a firewall which implements an implicit allow and is currently configured with the following ACL applied to its external interface. PERMIT TCP ANY ANY 80 -PERMIT TCP ANY ANY 443 -Which of the following rules would accomplish this task? (Choose two.)

1. A. Change the firewall default settings so that it implements an implicit deny — đáp án hiện tại
2. B. Apply the current ACL to all interfaces of the firewall
3. C. Remove the current ACL
4. D. Add the following ACL at the top of the current ACLDENY TCP ANY ANY 53
5. E. Add the following ACL at the bottom of the current ACLDENY ICMP ANY ANY 53
6. F. Add the following ACL at the bottom of the current ACLDENY IP ANY ANY 53 — đáp án hiện tại