login help

I am just starting out in asp.net. I want to create a login page which checks usernames and passwords in a database. once the users login they are able to access further pages. i dont want users to be able to just type in the url and see the pages if they havent logged in.

Please I dont need over complicated solution just something that I can learn from

Regards

P.s. Is session safe enough?See below 3 links those will helps you!

1. Simple example without database

http://www.dotnetjunkies.com/quickstart/aspplus/doc/formsauth.aspx

2. Exmaple with xml file having User information

http://www.15seconds.com/issue/020305.htm

3. Example with database

http://support.microsoft.com/default.aspx?scid=kb;EN-US;308157

Hope these helps you!
Thanks a lot for this article ! I am finding the solution to solve this problem .