controll access to aspx.page

[Richard Loupatty]

I would like to control the access to a page.
Access is given buy a hyperlink so the client can implement this in his site
For instance http://www.mysite.nl/site.aspx?customerid=1
Where customerid is the parameter what i would like to control
But i would like to have a solution where the link is not visible to other
persons,
so they can not use the same link to have access to the page

So the goal is to make a good solution where only authorized customers can
have access to this page?



Richard Loupatty