I have a beach club that has WiFi access points around the club. There will be up to 120 clients on the internet at any certain time. I would like to purchase a firewall appliance to install into the network. What would you recommend? We are not looking to spend a lot, but I do want to supply good secure WiFi for my guests. Also, if you know what the price of subscriptions are, please include those fees in you answer. Thanks!!!!!!