Restricting access to intranet page …

Hey all, I’m VERY new to all this but have a sort of general idea what I am doing. I have to design an intranet for the company where I work. This intranet is available to a heap of different sections that work in the same company but I want to restrict access to certain pages.
To access the computers in our company one must log-on with their individual user number to the network (to establise personalised network drives etc).

I want to put pages on the intranet where only people with certain user numbers can view it. Is there a way to do this without an actual secure page with a logon.

Im not too worried if it isnt that secure …. just a hurdle for anyone that wants to try and get the info thats all.

Let me know if you dont understand my question.

Thanks in advance.

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