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12-13910-A2-GN32-40 September 1998
Dial Access Security
Overview
NOTE
This chapter supports the operation of dial access security for the
COMSPHERE 391x Series modems. This chapter is self supporting
and can be removed to prevent unwanted knowledge of dial access
security operation.
Although the security functions described in this chapter are
designed to prevent unwanted user access to your network, the
company recognizes that no security system is infallible.
Dial Access Security is a feature that allows you to control who has access to your COMSPHERE
391x Series modem and ultimately your host DTE.
To take advantage of this security feature, you must create a database of passwords which are
stored in the modem’s nonvolatile memory. The Model 3910 can store a maximum of
20 passwords while the Model 3911 can store up to 3000 passwords. Control of security functions
is established in the Security Configuration Options group which is located in the Configuration
branch of the Top-Level menu. These areas are described in the Security Branch and Security
Configuration Options sections of this chapter.
The COMSPHERE 391x Series modem uses an outbound and inbound method of security known
respectively as Originate Access and Answer Access security. Both methods of security require
some type of password entry whether it be included as part of an AT command dial string or
entered directly from a remote user’s DTE.
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