I manage a network of about 60 windows computers. There is a ton of wasted time during the day because of facebook access. I want to limit employee access to facebook.com to < 30 mins per day.
I know how to block it completely using our firewall. I probably could write a proxy that all access goes through and I measure the time, but is there any easy way to limit access to facebook for my whole company to 30 mins per day?
I understand measuring 30 minutes on a stateless protocol is hard, but I'm really just asking if there is a tool that I can use that accomplished my goal of limiting access to facebook to a reassonable amount of time.
Note: I have a cisco ASA firewall