I have an .aspx page in which I want to restrict access to only one remote server. On this page I check for the correct Request.UserHostAddress.

Now if it isn't that IP address, how do transfer the request to the default 404 page? I haven't created a 404 page, nor do I want one. I just want it to look as if that page (actually the whole directory) doesn't exist to anyone besides my remote machine... In otherwords, I want the same thing to happen if they were to randomly type jibberish to my domain (Ex: http://sometest.websitethat.com/does...hhtrey33g.aspx)

Something like this will work:

if(Request.UserHostAddress != <foo>)
{
   Response.StatusCode = 404;
   Response.End();
}

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