which of the following best describes an arp spoofing attack? answer an attack that changes the source mac address on frames. an attack that associates an attacker’s mac address with the ip address of a victim’s device. an attack in which a switch is flooded with packets, each containing a different source mac address. an attack where a frame is manipulated to contain two tags.
The best description of an ARP spoofing attack is: “an attack that associates an attacker’s MAC address with the IP address of a victim’s device.”
Explanation:
ARP Spoofing Overview:
ARP (Address Resolution Protocol) is used to map IP addresses to MAC (Media Access Control) addresses within a local area network (LAN). In a typical network operation, a device wanting to communicate with another device sends an ARP request, asking “Who has IP address X.X.X.X? Please send me your MAC address.” The device with the specified IP address responds with its MAC address, allowing communication to proceed.
How ARP Spoofing Works:
In an ARP spoofing attack, the attacker sends falsified ARP messages over the network. By sending these malicious ARP replies, the attacker associates their own MAC address with the IP address of the target device (the victim). As a result, any traffic meant for the victim is redirected to the attacker’s device instead.
Consequences of ARP Spoofing:
Once the attacker successfully associates their MAC address with the victim’s IP address, they can perform several malicious actions, including:
- Man-in-the-Middle (MitM) Attacks: The attacker can intercept and possibly alter the communication between the victim and other devices on the network, allowing them to eavesdrop or inject malicious content.
- Data Theft: Sensitive information such as login credentials, personal data, and other confidential communications can be captured by the attacker.
- Denial of Service (DoS): By redirecting traffic or flooding the network with unnecessary requests, the attacker can disrupt the victim’s connectivity and access to network resources.
Defense Against ARP Spoofing:
To mitigate ARP spoofing, network administrators can implement security measures such as static ARP entries, ARP monitoring tools, and employing virtual LANs (VLANs) to segment sensitive traffic, reducing the likelihood of successful attacks.