Network staff still use cleartext Telnet to manage closet routers for a municipal campus. What is the most appropriate remediation?
Select an answer to reveal the explanation.
Short Explanation
Telnet is a postcard—anyone on the path can read the password. Switch management to SSH or other encrypted channels so closet routers stop advertising admin secrets.
Full Explanation
Secure protocol selection replaces insecure cleartext management (Telnet, legacy clear FTP, etc.) with SSH, TLS, or IPsec as appropriate for the channel. Credential and session confidentiality for network device administration is a fundamental Domain 4 control. Port obscurity or protocol downgrades do not remediate cleartext exposure.