You have been hired by Acme Corporation to evaluate their existing network and determine if the current network design is secure enough to prevent man-in-the- middle attacks.
When evaluating the network, which switch security option should you investigate to ensure that authorized ARP responses take place according to known IP-to-MAC address mapping?
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A. B. C. D.C.
The switch security option that should be investigated to ensure authorized ARP responses take place according to known IP-to-MAC address mapping is Dynamic ARP Inspection (DAI).
Dynamic ARP Inspection is a security feature that provides an additional layer of protection against ARP spoofing and other man-in-the-middle attacks. ARP (Address Resolution Protocol) is used to map IP addresses to MAC addresses, and attackers can exploit ARP to send malicious packets that can disrupt network communications or steal sensitive information.
DAI inspects ARP packets on the network and validates them against a trusted binding database of IP-to-MAC address mappings. If an ARP packet contains a mismatched or unauthorized IP-to-MAC address mapping, the packet is dropped or forwarded to a specific port, depending on the configuration.
ARP rate limiting and IP Source Guard are other security features that can provide some protection against ARP spoofing, but they do not provide the same level of security as DAI. ARP rate limiting limits the number of ARP requests and responses that a switch or router will process per second, while IP Source Guard verifies the source IP address of incoming packets against a database of authorized IP addresses.
DHCP snooping is a security feature that prevents rogue DHCP servers from distributing incorrect or malicious IP addresses to clients. While DHCP snooping can help prevent some types of man-in-the-middle attacks, it does not provide any protection against ARP spoofing or other attacks that exploit ARP.
In conclusion, when evaluating the network to determine if the current network design is secure enough to prevent man-in-the-middle attacks, Dynamic ARP Inspection (DAI) should be investigated to ensure that authorized ARP responses take place according to known IP-to-MAC address mapping.