Hello,

When the question says:

Use control plane protection in order to block and log all connections to the 
closed ports but make sure the traffic to/from the router still works.

It is a good a approach to use the command

show control-plane host open-ports to see what ports are listening on the 
router and use these ports on the class-map with the match not port TCP/UDP ## 
???

Thanks


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Allan Castro


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