ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition, and Outlook Web Access work together to enhance security for Outlook Web Access servers. Outlook Web Access provides Web browser access to the following items:
- E-mail messages
- Scheduling, including group scheduling
- Contacts
- Collaborative information that is stored in Microsoft Exchange Storage System folders
Outlook Web Access is used by remote, home, and roving users. When you publish Outlook Web Access servers by using ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition, you help protect the Outlook Web Access server from direct external access because the name and the IP address of the Outlook Web Access server cannot be accessed by the user.
The user accesses the ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition computer, and ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition then forwards the request to the Outlook Web Access server. This behavior follows the mail server publishing rule that is configured on the ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition.
The ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition Outlook Web Access publishing feature also enables you to publish Outlook Mobile Access and Exchange ActiveSync.
Outlook Mobile Access gives users access to Outlook from mobile devices. When you use Exchange ActiveSync, you can synchronize to the Exchange mailboxes from Microsoft Windows Mobile-based devices, such as Windows Mobile 2003 Software for Pocket PC, including Pocket PC Phone Edition, and Windows Mobile 2003 Software for Smartphone. Exchange ActiveSync offers a high level of security.
For more information about Web Publishing and Server Publishing scenarios and about how to troubleshoot publishing configurations, visit the following Microsoft Web site:
For more information about Outlook Web Access Server Publishing in ISA Server, visit the following Microsoft Web site:
For more information about Outlook Web Access Server Publishing in ISA Server 2004, Enterprise Edition, visit the following Microsoft Web site:
For more information about the procedures for publishing Outlook Web Access through ISA Server, visit the following Microsoft Web site:
For more information about how to publish Outlook Web Access by using client certification to authenticate users at the ISA Server computer, visit the following Microsoft Web site:
For more information about how to publish Outlook Web Access servers that have mail server publishing rules by using forms-based authentication to authenticate Outlook Web Access requests from external clients, visit the following Microsoft Web site:
For more information about the Microsoft Windows Server 2003
Public Key Infrastructure (PKI), visit the following Microsoft Web sites:
For more information about how to manage Outlook Web Access features and how to use forms based authentication with Outlook Web Access clients in Exchange Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:
830827
How to manage Outlook Web Access features in Exchange Server 2003