I work for a school. We have some a network with windows computers connected to the internet. This has been installed by an external company but there were no restriction at all to limit access to adult content websites and so one. This is quite risky in a school with teenagers don't you think ?  ;)

Well I'm not an informatician but I have good computers skills and I configured all network cards to point to OpenDNS in order to disallow access to adult content websites. This is working correctly but this solution has many disadvantages :

• difficult to maintain
• dependency to the OpenDNS
  and most of all
• it doesn't block everything: some adult content or images can be accessed with a simple research by google
  So I heard that it would be better to implement a firewall. And this can be done with PfSense.
  My questions are rather simple and your answers will help me to take my decision :

1. Is it possible for someone not having network administrator skills to implement this solution?
2. What are the minimum requirements for the machine hosting PfSense ? Would a "simple" computer with 4 GB ram, 3 Ghz, Intel Core i5 be enough ? I have to tell you  that we have +- 40 computers and to switches behind the internet access point.
3. PfSense is installed with the OS FreeBSD I think. Will this work in a windows environnement ?

Thanks in advance for your precious help !

loupo