I have recently set up a Mac Proxy Server in my school which seems to be working fine. I have tied it down to only allow my clients to connect and i am working on setting up client authentication before they can connect to make it as secure as possible and prevent anyone from connecting without my permission.
I now need to setup a firewall to maintain security and protect any pupils from seeing or accessing anything inappropriate on the internet.
Can anyone recommend what firewall i can put in place?
Many thanks