Allied Telesis AT-S63 - Manual (Page 76)

Chapter 5: Basic Stack Commands
76 Section I: Basic Operations
DISABLE TELNET
Syntax
disable telnet
Parameters
None.
Description
This command disables the Telnet server on the master switch. You might
disable the server to prevent anyone from managing the stack with a
Telnet client. The default setting for the Telnet server is enabled.
Example
The following command deactivates the Telnet server:
disable telnet