remote desktop setup

Requirements for remote desktop:

1) In the remote desktop setup, we want to restrict all the sites except google search engine, stack overflow, YouTube etc.

2) Nobody can access Gamil, Hotmail, Yahoo, Any transfer (sharing) site etc.

3) We want all kind of security in remote desktop. Also, we want to implement IP based restriction in remote desktop. For example, GitHub can access on the Unikoop IP address. From outside nobody can access GitHub.

4) We want active directory where all the remote desktop users can maintain along with different usernames and passwords.