The reason I bring this up is as our children get older, you start to worry a little more about what they can access, as well as what access can someone outside get in your home. This can provide a free, minus the cost of the pc, option for you to consider installing. This is not for the completely technically illiterate; you do need to have some networking knowledge, not so much for setup and installation, but for troubleshooting. I have seen a few who get a little overzealous in locking down what websites can be accessed only to find out they have a hard time getting to legitimate ones. However, in my experience, I have seen overwhelming success in installing and maintaining this system in small businesses and homes.
This product comes in a Lite form that comes with the free services installed, which their support comes in the form of a knowledge base on the website. However you can purchase varying additional features which come with the software venders support, based on which package you would like, or even in a la carte format. This product is fairly simple to use and is far less technical and costly compared to products such as the SonicWall TZ series. So, for those of you looking to add a little security without breaking the bank, I would suggest giving the Untangle firewall a chance, if you have a spare pc laying around, you could test it out without any cost other than your own time. Again, this is not something you will want to install in an enterprise setting, but for a home, church, library, or small business, it may be worth your time to look into.