Blackberry ENTERPRISE SOLUTION SECURITY - ENTERPRISE SOLUTION - SECURITY TECHNICAL Manual de usuario descargar pdf (Pagina 49)

4. The BlackBerry Collaboration Service checks the BlackBerry Configuration Database to find out if the maximum number

of sessions has been reached, and performs one of the following actions:

• If the maximum number of sessions has been reached and a timeout limit is set, the BlackBerry Collaboration

Service logs out any instant messaging sessions on BlackBerry devices that are out of coverage, and any instant

messaging sessions that are no longer sending status messages to the BlackBerry Collaboration Service.

• If there are no idle sessions, the BlackBerry Collaboration Service sends a "Server Busy" status message to the

BlackBerry device and rejects the login request.

• If the maximum number of sessions is not set and the number of sessions equals the total number that the HTTP

persistent connection supports, the BlackBerry Collaboration Service sends a "Failed" status message to the

BlackBerry device and rejects the login request.

5. The BlackBerry Collaboration Service checks the BlackBerry Configuration Database to verify that the user has

permission to use the collaboration client, and tries to authenticate the user using Integrated Windows® Authentication;

if the authentication is not successful, the BlackBerry Collaboration Service tries a forms-based login process instead.

The BlackBerry Collaboration Service sends a login request in JSON, a lightweight data-interchange format, to the

Microsoft® Office Communicator Web Access server.

The BlackBerry Collaboration Service opens the connection using HTTPS over port 443. The administrator can also

configure the connection to use HTTP, the transport protocol that the AJAX service uses, or a custom port number.

6. The Microsoft Office Communicator Web Access server formats the request using a Microsoft API and sends the request

to the Microsoft® Office Live Communications Server over an MTLS connection.

7. The Microsoft Office Live Communications Server accepts the request, processes the login information, and sends the

acceptance to the Microsoft Office Communicator Web Access server.

8. The Microsoft Office Communicator Web Access server sends the acceptance to the BlackBerry Collaboration Service.

9. The BlackBerry Collaboration Service sends the acceptance, in encrypted and compressed format, through the

BlackBerry Dispatcher to the BlackBerry device, and creates a cache of the connectivity information to maintain the

new instant messaging session.

10. The collaboration client on the BlackBerry device starts the session using an open GET request over the HTTPS persistent

connection.

The BlackBerry Collaboration Service receives server-initiated events from the Microsoft Office Communicator Web Access

server using an HTTP GET or HTTPS GET request, and sends these events to the collaboration client over this session. The

BlackBerry Collaboration Service sends events that the BlackBerry device initiates to the Microsoft Office Communicator

Web Access server using an HTTP POST or HTTPS POST request.

Feature and Technical Overview

Instant messaging process flows

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Blackberry ENTERPRISE SOLUTION SECURITY - ENTERPRISE SOLUTION - SECURITY TECHNICAL Manual de usuario Pagina 49