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In this section, we are going to learn about
port security.

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Port security is used to securing interface in switch. We are going to learn with an example case, let’s just start.

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Let’s import 1 switch. We are going to use 2960.
Next let’s import some server, let’s say 3 server.

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And then for testing, let’s also import 1 pc. Now
let’s connecting all server and pc to the switch.

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Okay done, let’s change the name
of the server, this is server 1,

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this is server 2, and this is server 3.

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Here we can see that server 1 is connected
to fa0/1, server 2 is connected to fa0/2,

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and server 3 is connected to fa0/3. So here we
know that fa0/1 until fa0/3 is used for server.

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For example, someday there is a hacker go to
Data Center, so let’s say this computer is hacker.

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The hacker unplug the cable from server 1
and then connecting the cable to their computer.

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Here let’s unplug the cable from the server
and then connect the cable to the hacker pc.

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In this case, switch should block fa0/1, so
the hacker can not send packet to anywhere.

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To block fa0/1 if there is an illegal
computer connected to it like this,

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we will need to configure
port security on the switch.

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Okay so that is the concept of port security.

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In the next video we are going to practice about port security.

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Thankyou for watching and see you on the next video