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At my organization, we had salesmen coming in to demo products, and they would just pull the Ethernet jack off a PC and connect it to their laptop, hoping to get Internet access. You might think this an unlikely scenario, but it does happen. For example, can anyone walk into your office, plug in a laptop, and access your network? You might argue that the wall jack has no connection to a switch, but couldn’t someone just pull the Ethernet cable from a working PC and connect to the network that way? Learn the basics of port security, and find out how to configure this feature.Ī growing challenge facing network administrators is determining how to control who can access the organization’s internal network - and who can’t. One way to boost network security is to use Cisco's Port Security feature to lock down switch ports.
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