7. Click Finish to complete the import.
After it is in the certificates store of the ISA server, the OWA SSL certificate can be used as
part of publishing rules.
NOTE
If a rule that makes use of a specific SSL certificate is exported from an ISA server,
either for backup purposes or to transfer it to another ISA server, then the certificate
must also be saved and imported to the destination server, or that particular rule will
be broken.
FIGURE 12.15 Installing the OWA certificate on the ISA server.
334 CHAPTER 12 Securing Outlook Web Access (OWA) Traffic
Creating an Outlook Web Access Publishing Rule
After the OWA SSL has been installed onto the ISA server, the actual ISA mail publishing
rule can be generated to secure OWA via the following procedure:
NOTE
The procedure outlined here illustrates an ISA OWA publishing rule that uses formsbased
authentication (FBA) for the site, which allows for a landing page to be generated
on the ISA server to preauthenticate user connections to Exchange. This
forms-based authentication page can be set only on ISA, and must be turned off on the
Exchange server itself to work properly.
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