how to change portal url in Dnn?

I am working on dnn, I have one parent portal and two child portals. my parent portal have a URL like(www.abc.com/abc) but i have to change i开发者_StackOverflow中文版t sub subdirectory to main Url that is www.abc.com how it will possible in dnn?

In the web.config you'll find an entry that looks like:

<add key="HostHeader" value="" />
<!-- Host Header to remove from URL so "www.mydomain.com/johndoe/Default.aspx" is treated as "www.mydomain.com/Default.aspx" -->

Just fill this out and it should fix your problem.

<add key="HostHeader" value="abc" />
<!-- Host Header to remove from URL so "www.mydomain.com/johndoe/Default.aspx" is treated as "www.mydomain.com/Default.aspx" -->