Synopsis
Some clients may wish to redirect the /default.aspx page to the root in order to avoid duplicate content in an effort to slightly increase the site's SEO.
NOTE: This will break the built-in Search routine on the Home Page, so the real value of this setting is questionable.
Procedure
- Edit the web.config file: Download it to your local computer and open in a text editor such as Visual Studio, Notepad++ or Notepad
- Copy the following code and place it in the web.config file as shown in the image below:
<rewrite>
<rules>
<rule name="Default to root" stopProcessing="true">
<match url="(.*)default.aspx" />
<action type="Redirect" url="{R:1}" />
</rule>
</rules>
</rewrite>

- Save the web.config and FTP it up to the site root folder.
You can set the redirect to other pages within the site as well, simply replace the {R:1} with the page of your choice such as t-about.aspx
NOTE: This assumes that the IIS Rewrite module has been installed. The 64-bit version for IIS 7+ can be found HERE