Using a Content Store Proxy Service
It is a good idea to set up a Content Store proxy service for accessing external Atom feeds rather accessing them directly. The advantages of doing this are:
It simplifies firewall configuration, since CUE and other Content Store clients can always access the Content Store web service. You then only need to make sure that the Content Store itself has access to the external Atom feeds.
You can ensure that any sensitive information such as domain credentials are removed from requests before they are forwarded.
You can insert any authentication credentials that may be required by target hosts before requests are forwarded.
For detailed information about Content Store proxy services and how to create them, see Content Store Proxy Services.