Installation guide

BlackBerry Enterprise Solution Security

BlackBerry wireless messaging security 14

BlackBerry wireless messaging security

The BlackBerry Enterprise Solution is designed with advanced security features to work seamlessly with existing

corporate networks while enabling a user to securely send and receive messages while away from their desktop

computer. Email messages remain encrypted at all points between the BlackBerry device and the BlackBerry

Enterprise Server.

Receiving an email message on the BlackBerry device

Sending a message from a desktop computer to the BlackBerry device

1. Alice sends a message to Bob from her desktop computer. Alice and Bob work at the same company.

2. The messaging server receives the email message and notifies the BlackBerry Enterprise Server that the

message has arrived.

3. The messaging server delivers the message to Bob’s desktop computer.

4. The BlackBerry Enterprise Server retrieves the message from the messaging server.

5. The BlackBerry Enterprise Server queries the messaging server for user preferences to determine whether or

not to forward the message to Bob’s BlackBerry device.

6. The BlackBerry Enterprise Server compresses and encrypts the message.

7. The BlackBerry Enterprise Server places the message in the outgoing queue.

The BlackBerry Enterprise Server is designed to maintain a constant, direct TCP/IP connection to the

wireless network over the Internet through the firewall on port 3101 (or 4101 in the case of a BlackBerry

device that supports implementation alongside a WLAN). This constant connection enables the efficient,

continuous delivery of data to and from the BlackBerry device.

8. The wireless network routes and then delivers the encrypted message to Bob’s BlackBerry device.

9. Bob’s BlackBerry device receives the encrypted message. The BlackBerry device then decrypts and displays

the message for Bob to read.

Sending an email message from the BlackBerry device

Sending a message from a BlackBerry device to the desktop computer

1. Bob responds to Alice’s message by composing an email on the BlackBerry device. When Bob sends the

message, the BlackBerry device compresses, encrypts, and then sends the message over the wireless

network.

All messages that users create on their BlackBerry devices contain the necessary BlackBerry Enterprise

Server routing information for the wireless network to make sure that the wireless network delivers the

message to the appropriate BlackBerry Enterprise Server.