MERLIN LEGEND Communications System Release 6.0
System Programming
555-660-111 Issue 1
February 1998
Customer Support Information
PageA-18Other Security Hints
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Establishing a Policy 1
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.
■Keep the Remote Maintenance Device turned off when not in use by
Lucent Technologies or your authorized dealer.
■Limit transfers to registered subscribers only.
■Use the Security Violations Notification options (Mailbox Lock or Warning
Message) to alert you of any mailbox break-in attempts. Investigate all
incidents.
■Review security policies and procedures and keep them up to date.