SharePoint RSS webpart proxy problem

For RSS webpart, if you pay attention to it, you must find a lot. It is useful to use the XML webpart provided by WSS, and then load an XSL file for implementation, which is useful for smiling goat and BML. rswebparts and Other implementations, But if you encounter a proxy problem, you will find that these webpart capabilities are limited. In fact, you can modify the web. add the section in your web. config
<System.net>
<Defaultproxy>
<Proxy proxyaddress = "" bypassonlocal = "true"/>
</Defaultproxy>
</System.net>
Fill the blank of proxyaddress. Try again now!