Telnet/Web/SSH Access

This dialog allows you to switch on/off the Telnet server and the SSH server, and to switch off the Web server on the device.

Tab. Telnet/Web/SSH Access

Parameters

Meaning

Possible values

Default setting

Telnet server active

Activates or deactivates the Telnet service (Telnet access) for this device.

On

Off

On

Web server (HTTP) active

Activates or deactivates the http service (Web server) for this device.

On

Off

On

Web server (HTTPS) active

Activates or deactivates the https service (Web server) for this device.

On

Off

Off

HTTPS port number

Enter the port number of the https Web server for the https access to the device.

1..65535

443

SSH server active

Activates or deactivates the SSH service (SSH access) for the device.

On

Off

Off

SSH version

Defines the SSH protocol version for the device.

v1

v2

v1 & v2

v1 & v2


Description of Telnet Access

The Telnet server of the device allows you to configure the device using the Command Line Interface (in-band). You can deactivate the Telnet server to inactivate Telnet access to the device.
The server is activated in its default setting.
After the Telnet server has been deactivated, you will no longer be able to access the device via a new Telnet connection. If a Telnet connection already exists, it is retained.

Note: The Command Line Interface (out-of-band) and the Security:Telnet/Web/SSH Access dialog in the graphical user interface allows you to reactivate the Telnet server.

Description of Web Access (http)

The device's Web server allows you to configure the device by using the graphical user interface. You can deactivate the Web server to prevent Web access to the device.
The server is activated in its default setting.

After you switch the http Web server off, it is no longer possible to log in via a http Web browser. The http session in the open browser window remains active.

Note: The Command Line Interface allows you to reactivate the Web server.

Description of Web Access (https)

The Web server of the device allows you to configure the device by using the graphical user interface via https (Hypertext Transfer Protocol Secure). In order to use the RADIUS server for authentication, activate the HTTPS function.

If you activate HTTPS and HTTP, the device redirects you to a HTTPS connection. Furthermore, if you change the HTTPS Port during an active HTTPS session, in order for the device to use the new port, deactivate and reactivate HTTPS.

You can open up to 16 http/https connections at the same time.

The HTTPS access to the Web server of the device is deactive in the default setting, and the port number of the https Web server is 443.

By deactivating the Web server you prevent a new login via a Web browser with https. The login in the open browser window remains active.

Note: The Command Line Interface allows you to reactivate the access to the Web server via https.

Description of SSH Access

The device's SSH server allows you to configure the device using the Command Line Interface (in-band). You can deactivate the SSH server to prevent SSH access to the device.
The server is deactivated in its default setting.
After the SSH server has been deactivated, you will no longer be able to access the device via a new SSH connection. If an SSH connection already exists, it is retained.

Note: The Command Line Interface (out-of-band) and the Security:Telnet/Web/SSH Access dialog in the graphical user interface allows you to reactivate the SSH server.
Note: To be able to access the device via SSH, you require a key. If no key is present, the device generates a random key (see the "Basic Configuration User Manual”).

Buttons

Tab. Buttons (Forts.)

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes, open the Basic Settings:Load/Save dialog, select the location to save the configuration, and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Help”

Opens the online help.