Eicon Networks DIVA T/A ISDN Modem Guía de usuario descargar pdf (Pagina 74)

Chapter Six: Security Call screening

11.

Click Finish.

12.

Click Save.

13.

Click Reset.

Call screening

Call screening enables you to accept or reject incoming data calls based on their phone number. This is an

effective way to limit dial-in access to the DIVA LAN ISDN Modem to a small group of remote sites.

To set up call screening

On the Manual Configuration menu, click Incoming data calls.

In the Define settings for box choose Call screening. You will see the following page.

Check the Enable call screening box.

Enter the phone numbers of the remote sites you want to receive calls from. Enter the same phone number

under First ISDN number and Second ISDN number.

Click Save.

Click Reset.

Call authentication

Call authentication enables ISDN devices, like the DIVA LAN ISDN Modem, to validate the identity of the

device at the other end of the line. Authentication works through the exchange of usernames and passwords. It

can be one-way (either the caller gets validated or the callee gets validated) or two-way (both sides validate

each other).

Generally, authentication is one-way, with the caller getting validated. For example:

• When the DIVA LAN ISDN Modem calls an ISP or a corporate network, it will be authenticated (i.e., it

must supply a username and password to log on).

• When a remote computer calls the DIVA LAN ISDN Modem, it will be authenticated (i.e., it must supply

a username and password for the call to be accepted).

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Eicon Networks DIVA T/A ISDN Modem Guía de usuario Pagina 74