ZyXEL Communications 100WH user manual CLID Authentication, Callback, Dial-in Server Applications

Prestige 100WH Internet Access Router

Table 6-3.	Edit Dial-in User Menu Fields (continued)
Field		Description
Rem CLID		If you have enabled the CLID Authen field in Menu 13, then you need to
		specify the telephone number from which this dial-in user calls. Your
		Prestige will check this number against the CLID in the incoming call. If
		they do not match and the CLID Authen is Required, then your Prestige
		will not answer the call.
Idle Time-out		Enter the idle time (in seconds). This time-out determines how long the
		dial-in user can be idle before your Prestige disconnects the call.
		Idle time is defined as the period of time where there is no data traffic
		between the dial-in user and your Prestige. The default is 300 seconds (5
		minutes).

Once you have completed filling in Menu 14.1 - Edit Dial-in User, press [Enter] at the message [Press ENTER to Confirm…] to save your configuration, or press [Esc] at any time to cancel

6.5CLID Authentication

CLID (Calling Line ID) authentication affords you the security of limiting a user to only initiate connections from a fixed location. The Prestige uses the caller ID sent by the switch to match against the CLIDs in the database. Please note that for CLID authentication to work on the Prestige, your telephone company must support caller ID. You must also include the AT command that enables call ID detection on your modem in Menu 2.1.

6.6Callback

Callback serves two purposes. One is security. When set to callback to a fixed number, an intruder will not gain access to your network even if he/she stole the password from your user, because the Prestige always calls back to the pre-configured number.

The other is ease of accounting. For instance, your company pays for the connection charges for telecommuting employees and you use your Prestige as the dial in server. When you turn on the callback option for the dial-in users, all usage are charged to the company instead of the employees, and your accounting department can avoid the hassles of accountability and reimbursement.

6-10Chapter 6 Dial-in Server Applications