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CCNP TSHOOT 642-832 Quick Reference by Brent Stewart

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Chapter 6. Troubleshooting Security Features

Network security has been seen as a separate function, but security has evolved to be a pervasive element. Routers are both potential targets for attacks and platforms that can offer security services.

Network devices have three types of functions and traffic, all of which are affected by security concerns:

• Management plane: The functions involved in management, such as device access, configuration, and telemetry.

• Control plane: The functions spoken between network devices, such as routing protocols.

• Data plane: Packet forwarding functionality.

Security for the management plane means controlling all the means of accessing the device and making configuration changes. Common security ...

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