palmOne Treo 650, Administrator'S Manual

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Chapter 2 System and Smartphone Requirements
6
Internet connection and security requirements
To use the Treo 650 smartphone to access information on the Exchange server, the
following is required:
■
Each user must have active service with a mobile provider and must subscribe
to a wireless data service.
■
The Exchange server must be reachable using the Internet.
■
SSL or VPN are highly recommended. SSL is required by Microsoft when using
ISA Server as a proxy.
■
The default SSL port on the server is set to 443. If you are using a different port,
users must enter the new port in the VersaMail client. For more information, see
Chapter 3 .
Typical Exchange ActiveSync server implementation
NOTE
The Microsoft website provides important information on planning and
deploying an Exchange Server 2003 system architecture. If you need information
about the prerequisites and procedures to successfully deploy and install Exchange
Server 2003 into your infrastructure, go to
http://www.microsoft.com/technet/
prodtechnol/exchange/2003/library/depguide.mspx .
This section describes two typical implementations in which a Treo smartphone
connects to an Exchange Server 2003. Your corporation’s typical Microsoft
Exchange Server 2003 implementation may differ from both of these typical
implementations based on the organization's needs, system configuration, and
installed features.
The following figure shows how a Treo smartphone connects using a proxy server
and a Microsoft Exchange 2003 front-end server (Outlook Web Access). To connect
to the Exchange server via the Internet in this scenario, the Exchange server must
be reachable using SSL or VPN either to the front-end server or the proxy server.
We recommend using the SSL protocol for a secure transmission of messages that
you send and receive. By default, the Treo smartphone settings assume SSL is
turned on.