Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 299

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Customer Support Information
Other Security Hints
Educating Users
Everyone in your company who uses the telephone system is responsible for
system security. Users and attendants/operators need to be aware of how to
recognize and react to potential hacker activity. Informed people are more likely to
cooperate with security measures that often make the system less flexible and
more difficult to use.
Never program passwords or authorization codes onto Auto Dial buttons.
Display telephones reveal the programmed numbers and internal
abusers can use the Auto Dial buttons to originate unauthorized calls.
Discourage the practice of writing down barrier codes or passwords. If a
barrier code or password needs to be written down, keep it in a secure
place and never discard it while it is active.
Operators or attendants should tell their system manager if they answer
a series of calls where there is silence on the other end or the caller
hangs up.
Users who are assigned voice mailboxes should frequently change
personal passwords and should not choose obvious passwords.
The system manager should advise users with special telephone
privileges (such as Remote Access, Outcalling, and Remote Call
Forwarding) of the potential risks and responsibilities.
Be suspicious of any caller who claims to be with the telephone company
and wants to check an outside line. Ask for a callback number, hang up
and confirm the caller's identity.
Never distribute the office telephone directory to anyone outside the
company; be careful when discarding it (shred the directory).
Never accept collect telephone calls.
Never discuss your telephone system's numbering plan with anyone
outside the company.
Issue 1
June 1997
Page A-23