2.2.18 Ensure telnet server is not enabled (Scored)

Level 1 - Server
Level 1 - Workstation 

The telnet-server package contains the telnet daemon, which accepts connections from users from other systems via the telnet protocol.

The telnet protocol is insecure and unencrypted. The use of an unencrypted transmission medium could allow a user with access to sniff network traffic the ability to steal credentials. The ssh package provides an encrypted session and stronger security.

Run the following command and verify result is not “enabled”:

# systemctl is-enabled telnet.socket
disabled

Run the following commands to disable telnet:

# systemctl disable telnet.socket