To allow
for automatic updates via the Windows Update website, ISA grants the Local Host network
access to the windowsupdate.com website. If this setting has been changed, or if access to
additional websites is required, the System Policy must be updated. It is therefore important
to know the location of this policy and how to modify it. To view this setting,
perform the following steps:
1. From the ISA Management Console, right-click on the Firewall Policy node in the
console tree and select Edit System Policy.
2. Under the Configuration Groups pane on the left, scroll down to Various, Allowed
Sites, and select it by clicking on it once.
3. Select the To tab on the right pane.
4. Under This Rule Applies to Traffic Sent to These Destinations, double-click on
System Policy Allowed Sites.
5. Under the System Policy Allowed Sites Properties, shown in Figure 17.1, ensure that
*.windowsupdate.com and *.microsoft.com sites are entered.
455 Updating ISA??™s Operating System
17
6. Add additional sites as necessary, such as third-party hardware or software vendor
sites, by using the New button and entering in the site in the same format as the
existing sites.
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