Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Customer Support Information
Page A-25
Other Security Hints
Establishing a Policy
As a safeguard against toll fraud, follow these guidelines for your MERLIN
LEGEND Communications System and voice messaging system:
■ Change passwords frequently (at least quarterly). Changing passwords
routinely on a specific date (such as the first of the month) helps users to
remember to do so.
■ Always use the longest-length password allowed.
■ Establish well-controlled procedures for resetting passwords.
■ Limit the number of invalid attempts to access a voice mailbox to five or
less.
■ Monitor access to the MERLIN LEGEND dial-up maintenance port.
Change the access password regularly and issue it only to authorized
personnel. Disconnect the maintenance port when not in use. (However,
this eliminates Lucent Technologies 24-hour maintenance surveillance
capability and may result in additional maintenance costs.)
■ Create a communications system management policy concerning
employee turnover and include these suggestions:
— Delete all unused voice mailboxes in the voice mail system.
— If a terminated employee had Remote Access calling privileges
and a personal authorization code, remove the authorization code
immediately.
— If barrier codes and/or authorization codes were shared by the
terminated employee, these should be changed immediately.
■ Regularly back up your MERLIN LEGEND system files to ensure a timely
recovery should it be required. Schedule regular, off-site backups.