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NEW QUESTION: 1
Which of the following is NOT a characteristic or shortcoming of packet filtering gateways?
A. The source and destination addresses, protocols, and ports contained in the IP packet header are the only information that is available to the router in making a decision whether or not to permit traffic access to an internal network.
B. They are appropriate for medium-risk environment.
C. They do not support strong user authentication.
D. They don't protect against IP or DNS address spoofing.
Answer: B
Explanation:
Explanation/Reference:
Explanation:
Packet filtering was the first generation of firewalls and it is the most rudimentary type of all of the firewall technologies. Packet filtering gateways/firewalls would be insufficient for a medium-risk environment.
Incorrect Answers:
A: Packet filtering gateways can make access decisions based upon the following basic criteria:
Source and destination IP addresses

Source and destination port numbers

Protocol types

Inbound and outbound traffic direction

B: Packet filters are useful in IP address spoofing attack prevention because they are capable of filtering out and blocking packets with conflicting source address information (packets from outside the network that show source addresses from inside the network and vice-versa). On the other hand packet filtering gateways would not be able to protect against DNS spoofing. A stateful firewall is needed to protect against DNS spoofing C: Packet filter gateways cannot ensure strong user authentication.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 630

NEW QUESTION: 2
what are two message types that are filtered by an IPv4 multicast boundary?(choose two)
A. PIM hello messages to 224.0.0.13
B. PIM hello messages on the local segment
C. link-local message
D. PIM Register messages
E. PIM Prune messages
F. PIM Join messages
Answer: A,E

NEW QUESTION: 3
Wi-Fiデバイスの総出力エネルギーの測定には何が使用されますか？
A. dBm
B. dBi
C. mW
D. EIRP
Answer: C