I want to limit specific IP addresses to only browse a specific number of work-related websites/URL's. Can someone suggest best approach to this?

Thanks in advance.

Shane

Set up webproxy, then allowing and dropping specific sites is easy.

Set up webproxy, then allowing and dropping specific sites is easy.

I have test MK Web proxy and works fine, but the problem is . . . .

I can bypass it with some programs like Ultrasurf

Then set up very strict firewall,that allows certain src addresses only to specific destination addresses.

Absolutely I did it!!!
Once I had a PPPoE server on V 4.x and redirected certain users that their credit was over to a page which tells them pay for recharge.
It works fine. but after a few days, I understood they bypass webproxy with Ultrasurf. It was a shame for our network!!!!!!!!!!!