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I'm looking for any free version or cheap way to restrict internet access for employees. I used content advisor through GPO, but it never works. It only blocks &nbsp;some while allowing most. And it sometimes doesn't load correct settings for users. <br />
<br />
If you know any, please let me know. <br />
<br />
Thank you in advance. 
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I'm looking for any free version or cheap way to restrict internet access for employees. I used content advisor through GPO, but it never works. It only blocks  some while allowing most. And it sometimes doesn't load correct settings for users. 

If you know any, please let me know. 

Thank you in advance. 

Internet access control

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.

Internet Protocols

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.

TCP/IP

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.