I need a way to filter internet content in Linux

Hello everyone,

I’m looking for a way to only allow a white list of internet sites for my office. Upper management has given me a green light to test Linux (any distro) on some work computers, but the one condition is that we need to have a good internet filter (users tend to use the internet for non office related tasks…). First I need to set up a couple of Linux boxes. I’m somewhat new to Linux, but I have enough skills to not be totally clueless on what I’m doing.

Thanks in advance.