Session Variables in .NET

[Carl]

Hi,

I am starting to develop an ASP.Net application.

I will have a logon page which will take a UserName and
Password. A Stored Procedure will verify that the logon
is correct.

I was going to use a Session Variable to indicate whether
the user is logged on or not. Based on this variable I
would show certain links, allow access to certain pages.

Is this a good idea or is there a better way?

Thanks.
Carl.