Protecting a Port on Switch - 3750

Unanswered Question
Dec 28th, 2007


how can i protect a port on a switch, so that no one can plug his machine into the switch and comfigure an ip on his laptop and get connected.

what are the different procedures to protect a swicth port ?

I have this problem too.
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shrikar.dange Fri, 12/28/2007 - 01:22


There are many ways to accomplish this task.

The couple of ways are as follows:

1)You can use the port based athentication using dot1x.

You can configure that port to get authenticated through radius server before any one can use/access it.

2)You can use switch-port security command.

Under this command again there are 3-4 options.If there is a vioaltion in the applied switch-port security policy it can eigther be shutted down automatically or it can go in errrdisable state as per your config. Fri, 12/28/2007 - 01:25


There are several procedures:

1) You can shutdown the port.

2) You can configure 802.1x Port based authentication. Here is the link:

3) You can configure port security. Here is the link:

I hope this helps.

Best regards.



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