I have a large retail client that occasionally get viruses on their in store PC's because employees surf the net when they aren't supposed to. The PC's require that employees access the internet in order to look up information. However, the employees only need to access 4 sites to do their job. They are using Chrome now but I can put them on IE or Firefox or even Safari.
Is there any way that I can set it any of the above browsers so that employees ca only access those 4 sites?