4.2 Mac Flooding

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9 Terms

1
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What is Ethernet Media Access Control (MAC)?

Physical address of a device.

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How long is a MAC address?

48 bits/6 bytes long displayed in hexadecimal.

3
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What do the first 3 bytes of the MAC address represent?

The organizationally unique identifier (OUI) for the manufacturer that made the device.

4
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What do the last 3 bytes of the MAC address represent?

Unique identifier for that specific device.

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What will happen to unknown MAC addresses and output interfaces?

They are added to the MAC address table.

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What are switches constantly gathering?

Updating list of MAC addresses.

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What is frame switching?

MAC address or output interface needs to be sent to something different.

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What is MAC flooding?

Attacker sends traffic with different MAC addresses, forcing the legitimate MAC addresses to lose space with the table filling up, causing any information sent after to be forwarded.

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How can MAC flooding be restricted?

Can be restricted in the switch’s port security settings.