
BlackBerry Enterprise Solution Security
Protecting the BlackBerry Infrastructure connections 32
TCP/IP connection
The TCP/IP connection from the BlackBerry Enterprise Server to the BlackBerry Router is designed to be secure
in the following ways:
Security measure Description
The BlackBerry Enterprise
Server sends outbound traffic
to the BlackBerry device only
through the authenticated
connection to the BlackBerry
Infrastructure.
• You must configure your corporate firewall or proxy to permit the
BlackBerry Enterprise Server to initiate and maintain an outbound
connection to the BlackBerry Infrastructure on TCP port 3101.
The BlackBerry Enterprise
Server does not send inbound-
initiated traffic to the
messaging server.
• The BlackBerry Enterprise Server discards inbound traffic from any
source other than the BlackBerry device (through the BlackBerry
Infrastructure or BlackBerry Desktop Software) or the messaging
server.
The BlackBerry Enterprise
Solution encrypts data traffic
over TCP/IP.
• Data remains encrypted with BlackBerry standard encryption from the
BlackBerry Enterprise Server to the BlackBerry device or from the
BlackBerry device to the BlackBerry Enterprise Server. There is no
intermediate point at which the data is decrypted and encrypted
again.
• No data traffic of any kind can occur between the BlackBerry
Enterprise Server and the wireless network or the BlackBerry device
unless the BlackBerry Enterprise Server can decrypt the data using the
correct, valid master encryption key. Only the BlackBerry device and
BlackBerry Enterprise Server have the correct, valid master encryption
key.
The BlackBerry Enterprise
Server encrypts data traffic
between specific components
• The BlackBerry Enterprise Server encrypts data traffic between
specific components. The BlackBerry Collaboration Service, the
connection service, the BlackBerry Policy Service, and the BlackBerry
Synchronization Service share a secure communication password that
is known only to them. The BlackBerry Messaging Agent and the
BlackBerry Dispatcher share a different secure communication
password that is known only to them. When one of these components
initiates a connection to the BlackBerry Dispatcher, the BlackBerry
inter-process protocol uses SPEKE to bootstrap from the component's
secure communication password and establishes a 256-bit AES
encryption key (a session key). The BlackBerry Enterprise Server then
uses the session key to encrypt data traffic to any components that
store the same secure communication password.
The BlackBerry device initiates
inbound connections using the
BlackBerry Router to a WLAN
only.
• The BlackBerry Router sends the Internet or intranet content requests
from the BlackBerry device over port 4101 to the WLAN. The BlackBerry
Router verifies that the PIN belongs to a valid BlackBerry device that is
registered on the wireless network.
www.blackberry.com
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