When you think about porn blocking there are 2 levels to consider: For children look for filters and blockers. Open DNS is free, I can hook you up to a tech who can talk you through the set up. Open DNS blocks porn at the server. You need to be able to Google search for the correct filter/blocker for your operating system. It’s super important to learn how to search for correct software to protect your family due to the constant change of technology and the creativity of users to get around blocking and filtering. For middle school and high school students I recommend tracking software that can tell you how much porn and sexting a student engages in. This is an important piece for you and your student. They will be exposed to sexting and porn from their friends. The question is not permission to use porn, but the ability to have conversation. Do you have a qualified therapist to assist you? Ongoing conversation with our student culture which has normalized porn and sexting is vital. Talk about it. Open the lines of communication. Give help. Be the adult. Shame will shut down your ability to talk to your child. Be positive, set boundaries,be kind and firm. Below is an excellent article on porn blocking for macs. This is a blog written by an IT expert to block porn. Check it out. http://www.doctoddlove.com/todd-love-blog/how-to-configure-your-mac-for-web-filtering