From the course: Cisco Network Security: Secure Routing and Switching

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macof attack

macof attack

From the course: Cisco Network Security: Secure Routing and Switching

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macof attack

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- [Instructor] The CAM or MAC address table on a switch maps the MAC address of a device to tne physical switch port. The CAM table helps data move efficiently on a LAN by sending data only to the proper destination and nowhere else. In the CAM or switching table, these pairings can be voluminous. In a macof attack, the table is flooded with bogus IP and MAC addresses and causes a switch to enter a fail-open mode. The switch really doesn't know where to send the data, so it acts like a hub, sending data everywhere. It's easy to launch a macof attack. I'm in Kali Linux, and I'll show you how I can launch a macof attack by one simple step. I'll go into a terminal, and I'm simply going to type macof. And now you can see multiple bogus IP and MAC addresses that are going to flood the CAM table. Now the results of a macof attack will really depend on the switch. It may behave like a hub, it may do nothing because it has protection enabled, or it may even crash and reboot. For the macof…

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