To generate an SSL certificate request for use with a third-party CA, perform the following
steps:
1. From the OWA server (not the ISA server), open IIS Manager (Start, All Programs,
Administrative Tools, Internet Information Services [IIS] Manager).
2. Under the console tree, expand SERVERNAME (local computer), Web Sites, and
right-click the OWA virtual server (typically named Default Web Site), and then click
Properties.
3. Select the Directory Security tab.
4. Under Secure Communications, click the Server Certificate button.
5. At the welcome page, click Next to continue.
6. From the list of options displayed, select Create a New Certificate and click Next
to continue.
7. From the Delayed or Immediate Request dialog box, select Prepare the Request Now,
But Send It Later and click Next.
8. Type a descriptive name for the certificate, such as what is shown in Figure 12.4,
leave the Bit Length at 1024, and click Next to continue.
320 CHAPTER 12 Securing Outlook Web Access (OWA) Traffic
9. Enter the name of the organization and what organizational unit will be associated
with the certificate. These fields will be viewable by external users, and should accurately
reflect the organizational structure of the requestor.
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