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SSH is a secure protocol that establishes tunnels for users on insecure networks.

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SSH is a secure protocol that establishes tunnels for users on insecure networks. Which of the following statements is false about SSH login?

A.

The SSH server supports authentication. Only users who have passed authentication can log in to the device.

B.

When the SSH server function is enabled on a device, the socket obtaining service is also enabled on the device. This makes the device prone to scanning by attackers. As such, the SSH server function and the corresponding port can be disabled when the SSH server function is not required.

C.

An ACL rule can be configured for each VTY channel to control the IP addresses of clients that are allowed to log in to the device.

D.

By default, the port number of the SSH server is 23. You can change the port number of the SSH server to a non-well-known port number to reduce the probability of being scanned and attacked.

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