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System Description
Security Solutions
GDC modems provide several built-in and optional security features, described briefly below,
which can function alone or in various combinations
installed at the factory at the time of purchase, or can be factory upgraded in the field. GDC
continually enhances the security features of its V.34 modems. For the latest information, please
check www.gdc.com or contact your GDC representative.
Note
For detailed configuration information, refer to Chapter 3 under the paragraphs on Security,
and the corresponding AT-command descriptions in Chapter 4.
Built-in Password Security Features
With Online Security enabled in the answering GDC modem, access is protected by passwords
stored in the modem. This feature can be configured for Pass-thru or Callback operation. With Pass-
thru, the modems handshake, then the caller is prompted to enter a valid password. With Callback,
a callback phone number previously saved in the answering modem is used to connect with an
authorized caller. Up to 10 phone numbers can be stored in the modem.
With SteadFast Handshake Security enabled in GDC modems at the originating and answering
sites, the answering GDC modem verifies the originating modem's SteadFast password. Passwords
must be previously stored in both modems.
RADIUS Security Option
RADIUS (Remote Authentication Dial-In User Service) is an optional software feature for the
modem and SCM that allows the modem to provide secure dial-in serial connections to the network.
In a RADIUS protected system, dial-in users will be authenticated through user names, passwords,
and challenged prompts coming from the modem and through the SCM to a RADIUS
authentication server.
•
RADIUS Security also requires the SCM card and at least one RADIUS server.
•
For additional modem-related information, refer to the Chapter 3 section in this manual on
RADIUS Security (Remote Authentication Dial-In User Service)
For detailed SCM and RADIUS information, refer to the SpectraComm Manager Installation
& Operation Manual (048R303-000), Appendix B: SCM with RADIUS.
AES Encryption Option
AES Encryption employs the Advanced Encryption Standard which is a symmetric 128-bit block
data encryption technique that allows each modem to take transmit/receive asynchronous data and
encrypt/decrypt it on a dial-up or private line network. The user configures the modem for AES
Encryption by entering an encryption key and by typing expanded AT commands at one of the
modem's management interface (Telnet via the SCM, the SCM craft port, or a terminal connected
to the modem's DTE connector).
•
A modem featured with AES Encryption is required at either end of the communication link
and with the same encryption key entered in both modems.
•
A modem featured with AES Encryption does not support the following modem functions:
FAX, MNP10 (cellular link), sync compression, country codes other than USA and Canada,
TEAM configuration of SAM and encryption parameters.
060R122-000
Issue 15
SpectraComm Dual V.34 Modem
Installation and Operation
(Table
3-3). Optional security features are
.
1-5
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