If you set this IT policy rule to 2, the BlackBerry device prevents WTLS from using an RC encryption algorithm, which can
cause problems when using WTLS.
Dependencies
If you set this IT policy rule to 2, the following additional IT policy rules are set:
•
Password Required is set to True
•
Minimum Password Length is set to 5
•
Suppress Password Echo is set to True
•
PGP Allowed Content Ciphers is set to AES (256-bit), AES (192-bit), AES (128-bit), Triple DES
•
S/MIME Allowed Content Ciphers is set to AES (256-bit), AES (192-bit), AES (128-bit), Triple DES
•
TLS Restrict FIPS Ciphers is set to True
•
Disallow Third Party Application Download is set to True
Minimum requirements
•
Java® based BlackBerry device
•
For FIPS Level 1 compliance, BlackBerry Device Software Version 3.3
•
For FIPS Level 2 compliance, BlackBerry Device Software Version 4.0
•
BlackBerry Enterprise Server Version 4.0
•
BlackBerry® Connect™ Transport Stack Version 4.0
Exceptions
The BlackBerry Enterprise Server for Novell® GroupWise® supports this IT policy rule in BlackBerry Device Software Version
4.0 to Version 4.2.1.
Firewall Block Incoming Messages IT policy rule
Description
This rule specifies whether the BlackBerry® device firewall prevents the device from processing specific types of incoming
messages, including SMS text messages, MMS messages, public and corporate PIN messages, and BlackBerry® Internet
Service messages.
Note: The default peer-to-peer encryption key is used to send public PIN messages that are known to all BlackBerry devices.
A BlackBerry device with a corporate peer-to-peer encryption key can only send and receive corporate PIN messages with
other BlackBerry devices within your organization's network that use the same peer-to-peer encryption key.
Default setting
The default setting is a null value.
Usage
If you set this IT policy rule, the BlackBerry device blocks the specified types of incoming messages at the firewall and does
not notify the user that those types of messages were received.
Policy Reference Guide
Security policy group
142
