CMMC Practice Requirement:

Use encrypted sessions for the management of network devices.

CMMC Requirement Explanation:

Telnet allows you to remotely connect to a device on your network. Unfortunately, Telnet transmits user names and passwords unencrypted. SSH offers the same functionality but is encrypted.

Example CMMC Implementation:

Do not use telnet to access your devices over the network, use SSH instead.

Scenario(s):

- Scenario 1:

Alice used to connect to a switch on her network using Telnet. Because it is unencrypted and her company needs to meet CMMC requirements she close the port for Telnet and only uses SSH going forward.
 

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