To publish the OWA for Exchange 2010 with ISA 2006 Standard Edition: Create a publishing rule

This completes the task by entering the critical steps to create the OWA publishing rule. Right-click on the Firewall Policy node and select New from the pop-up shortcut menu-the Exchange Web Client Access Publishing Rule command to bring up the Create Rule Wizard, as shown in Figure 1.

Figure 1 Creating the OWA publishing rule

After you give the rule a name, click Next, select the Exchange version and check Outlook Web Access, and then click Next, as shown in Figure 2. ISA 2006 is earlier than Exchange 2010, so choose Exchange 2007 here.

Figure 2 Selecting an Exchange version