Switched port analyzer (SPAN) ports provide similar functionality, but occur at the switch and do not require additional...
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hardware. The network administrator simply configures one port on the switch to serve as a SPAN port, and the switch then delivers copies of all traffic from any port on the switch to the SPAN port, allowing for the connection of a monitoring device. From a security perspective, there's not much difference between a TAP and a SPAN port. Both are useful for monitoring network traffic (albeit at different points in the network) and provide the same basic functionality.
- Lock down IM by monitoring traffic over the network.
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