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Which feature minimizes DoS attacks on an IPv6 network?
A. IPv6 Binding Security Table
B. IPv6 Router Advertisement Guard
C. IPv6 Prefix Guard
D. IPv6 Destination Guard
Correct Answer: D
Explanation/Reference:
Explanation:
The Destination Guard feature helps in minimizing denial-of-service (DoS) attacks. It performs address resolutions only for those addresses that are active on the link, and requires the FHS binding table to be populated with the help of the IPv6 snooping feature.The feature enables the filtering of IPv6 traffic based on the destination address, and blocks the NDP resolution for destination addresses that are not found in the binding table. By default, the policy drops traffic coming for an unknown destination.
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/7600/ios/15S/configuration/guide/7600_15_0s_book/IPv6_Security.pdf
