My understanding (I'm new to this stuff so bear with me):
A. ICMP- Used for testing connectivity with ping and such like with IP Adresses, not MAC Adresses.
C. DHCP- Auto-assigns IP adresses on a network. Again, IP and not MAC.
D. IMAP- Used for email servers, not MAC adresses
Answer: B - Reverse Address Resolution Protocol . Can be used to ask what a machine's IP address is based on it's MAC address. If the adress has been spoofed it will obviously show a different IP than the one it is expecting to see
The best option to use to detect a MAC spoofing attack would be B. Reverse Address Resolution Protocol (RARP).
MAC spoofing is a technique in which an attacker changes the source MAC address of a device to pretend to be another device on the network. This can be used to conduct malicious activities like stealing data or launching further attacks.
Reverse Address Resolution Protocol (RARP) is a protocol used to map a MAC address to an IP address. When a device needs to communicate with another device on the network, it sends an ARP request to get the MAC address of the destination device. Similarly, when a device needs to communicate with a device whose MAC address is known, it sends a RARP request to get the IP address of the device.
In the case of a MAC spoofing attack, an attacker pretends to be another device on the network, so the IP address associated with that MAC address will be incorrect. By using RARP, the system can detect if the IP address returned in response to the MAC address is different than what is expected. This would indicate a possible MAC spoofing attack.
A MAC spoofing attack consists of changing the MAC address of a network device (network card). A client computer can use Revers Address Resolution Protocol to request its Internet Protocol (IPv4) address and MAC address from a computer network to check its accuracy. DHCP auto assigns a IP address so this is why this is not the answer.
can anyone point to where Reverse Address Resolution Protocol is in the exam objectives? I've only found it from a google search, and it says RARP was replaced by DCHP. To defend against MAC spoofing DCHP-snooping or MAC filtering will generally
be used, and these are covered in the network hardening portion of the objectives.
A MAC spoofing attack consists of changing the MAC address of a network device (network card). A client computer can use Revers Address Resolution Protocol to request its Internet Protocol (IPv4) address and MAC address from a computer network to check its accuracy. DHCP auto assigns a IP address so this is why this is not the answer.
DHCP operates at the application layer of tcp. Where arp operates of at the first layer (link layer, network interface layer). This also where the Ethernet, token ring and one other phsyical aspects of the network, including Mac addresse and bits of data (phsyical layer and data link layer of the OSI model).
Reverse ARP is a networking protocol used by a client machine in a local area network to request its Internet Protocol address (IPv4) from the gateway-router's ARP table. The network administrator creates a table in gateway-router, which is used to map the MAC address to corresponding IP address. (https://www.google.com/search?q=reverse+address+resolution+protocol)
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