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Management protocols like NETCONF access network elements on well-known ports. Which design practice hardens a network device implementation?
A. Specify the source interface for SSH
B. Limit access to port 830, well-known clients, and SSH VTY.
C. Enable CoPP.
D. Configure ip http secure-server.
Correct Answer: A
Explanation/Reference:
Explanation:
The management plane is used in order to access, configure, and manage a device, as well as monitor its operations and the network on which it is deployed. The management plane is the plane that receives and sends traffic for operations of these functions. You must secure both the management plane and control plane of a device, because operations of the control plane directly affect operations of the management plane. This list of protocols is used by the management plane:
▪ Simple Network Management Protocol
▪ Telnet
▪ Secure Shell Protocol
Reference:
http://www.cisco.com/c/en/us/support/docs/ip/access-lists/13608-21.html
B