How to disable telnet on RouterOS or CHR (Cloud Hosted Router)

When you have a fresh install of RouterOS or CHR (MikroTik Cloud Hosted Router), telnet access is enabled by default. Since you typically want to access the router using SSH, WinBox or WebFig instead of telnet, you can - and should - disable it entirely.

In order disable telnet, login to your router using SSH or WinBox and run the following command:

/ip/service/disable telnet