如要将kufanyun.com重定向到www.kufanyun.com，则配置web.config如下：

1. <?xml version="1.0" encoding="UTF-8"?>
2. <configuration>
3. <system.webServer>
4. <rewrite>
5. <rules>
6. <rule name="www" stopProcessing="true">
7. <match url=".*" />
8. <conditions>
9. <add input="{HTTP_HOST}" pattern="^kufanyun\.com$" />
10. </conditions>
11. <action type="Redirect" url="http://www.kufanyun.com/{R:0}" redirectType="Permanent" />
12. </rule>
13. </rules>
14. </rewrite>
15. </system.webServer>
16. </configuration>