Control of cookies???

[Marcelo Caffaro <leao () employer com br>]

Hello Guys, anyone can help-me to send ideas, solutions or samples to manage the session of one website.
 
For Sample, i have one site (IIS) and below this structure of site i have the folder named docs, but if i put the 
complete url of the website document, everyone can see my document. I need create one method to authenticate my user, i 
dont know if cookie control is a best solution but i need to arrest the user, ip and cookie to control the user access, 
if the user is not authenticated the user cannot see the documents.
 
Anyone can help-me?
 
Sorry my english