Technical information

Remote Port Security Device (RPSD)
Issue 7 June 2001
15-3
Securing DEFINITY Systems (Prior to Release 7.2)
with the Remote Port Security Device (RPSD)
If your telephones are connected to a DEFINITY switch or DEFINITY ECS prior to
Release 7.2 (which is the same as DEFINITY G3V7.2) you may wish to use a
Remote Port Security Device, the RPSD. (Note that this Lock and Key system is
available ONLY in the United States.) The RPSD hardware offers enhanced
protection for dial-up data access so that hackers and other unauthorized users
cannot gain access to your systems.
NOTE:
Specifically, the RPSD can be used with the DEFINITY ECS, DEFINITY
Communications Systems, System 75 (V2 or higher), System 85 and
DIMENSION PBX Systems; the AUDIX, DEFINITY AUDIX, and AUDIX
Voice Power Systems; and all System Management products
!
DANGER:
IMPORTANT NOTE: Since the RPSD contains a Data Encryption
Standard (DES) algorithm, its use outside the United States and
Canada is prohibited by law.
On the RSPD, the Lock and Key authentication process is as follows: The Lock
answers the incoming call destined for the dial-up modem port. It generates a
dynamic challenge, unique to every call, and transmits it to the RPSD installed at
the calling end. The Lock and Key must be initialized with the same secret
encryption key value. This secret encryption key has approximately 70 quadrillion
combinations.
When the RPSD Key receives the challenge, it generates a response using the
secret encryption key. It then transmits the expected response back to the RPSD
Lock. If the RPSD lock successfully authenticates the response, it provides
ringing to the terminating modem and the call completes. The RPSD terminates a
call immediately if any step in the challenge/response authentication process is
not completed successfully.
For more information about the RPSD hardware, see the DEFINITY
Communications System Remote Port Security Device user’s Manual
555-025-400.
Avaya Support
Avaya provides RPSD Keys to their maintenance centers to accommodate
access to systems you secure with the RPSD Lock.
For more information on the RPSD, see the DEFINITY Communications Systems
Remote Port Security Device User’s Manual.