ICR-1601
205
5.1.4
Telnet & SSH
A command-line interface (CLI), also known as command-line user interface, and console user interface
are means of interacting with a computer program where the user (or client) issues commands to the
program in the form of successive lines of text (command lines). The interface is usually implemented with
a command line shell, which is a program that accepts commands as text input and converts commands to
appropriate operating system functions. Programs with command-line interfaces are generally easier to
automate via scripting. The device supports both Telnet and SSH (Secure Shell) CLI with default service port
23 and 22, respectively.
Telnet & SSH Scenario
Scenario Application Timing
When the administrator of the gateway wants to manage it from remote site in the Intranet or Internet,
he may use "Telnet with CLI" function to do that by using "Telnet" or "SSH" utility.
Scenario Description
The Local Admin or the Remote Admin can manage the Gateway by using "Telnet" or "SSH" utility with
privileged user name and password.
The data packets between the Local Admin and the Gateway or between the Remote Admin and the
Gateway can be plain texts or encrypted texts. Suggest they are plain texts in the Intranet for Local
Admin to use "Telnet" utility, and encrypted texts in the Internet for Remote Admin to use "SSH" utility.
