Details
Disables the telnet access to the security appliance in the case it has been configured
Rationale:
Telnet is an unsecure protocol as username and password are conveyed in clear text during the administrator authentication and can be retrieved through network sniffing.
Solution
* Step 1: Run the following to remove the telnet access
HOSTNAME(CONFIG)#NO TELNET 0.0.0.0 0.0.0.0 _
* Step 2: Run the following to remove the configured telnet timeout
HOSTNAME(CONFIG)#NO TELNET TIMEOUT _
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Cisco.