This allows that device to simply collect all the data passing through a hubbed network. However, in a hubbed network, sniffing data is very easy to accomplish by placing a network card into promiscuous mode. The data is typically rejected by all network cards, except the one it was intended for. A passive hub has no mapping, and thus broadcasts line data to every port on the device.

This is the main difference between a switch and a passive hub. It actively monitors (cache) the MAC address on each port, which helps it pass data only to its intended target. The reason for this is that the switch regulates the flow of data between its ports. Macof is a member of the Dsniff suit toolset and mainly used to flood the switch on a local network with MAC addresses. If you see inaccuracies in our content, please report the mistake via this form.MAC Flooding with MACOF & some major countermeasures If we have made an error or published misleading information, we will correct or clarify the article. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. ZDNET's editorial team writes on behalf of you, our reader. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers. Neither ZDNET nor the author are compensated for these independent reviews. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay.

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