EC-Council
EC0-350 · Question #752
Study the log given in the exhibit, Precautionary measures to prevent this attack would include writing firewall rules. Of these firewall rules, which among the following would be appropriate?
The correct answer is B. Allow UDP 53 in from DNS server to outside. See the full explanation below for the reasoning.
Question
Study the log given in the exhibit, Precautionary measures to prevent this attack would include writing firewall rules. Of these firewall rules, which among the following would be appropriate?
Exhibit
Options
- ADisallow UDP 53 in from outside to DNS server
- BAllow UDP 53 in from DNS server to outside
- CDisallow TCP 53 in form secondaries or ISP server to DNS server
- DBlock all UDP traffic
How the community answered
(22 responses)- A9% (2)
- B73% (16)
- C5% (1)
- D14% (3)
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