We are looking at a way to control and monitor our internet usage. What we require is a way to block certain sites, such as porn, but also to notify when other site categories are accessed. We use a WatchGuard firewall with web blocker which is applied to a http proxy. We can setup a https proxy and apply the web blocker, however this will require a certificate to be installed at the client to work. No real biggie for our domain users. However we have a number of third party users that bring their own devices at a different physical location, that it will be very difficult to install the certificate / manage these devices as there is a high turnover of people / devices.
What is the best way to manage this? If via the firewall, how best to manage the third party devices/ certificate install. Internet proxy? if so any recommendations? For the third party devices, the access point is Meraki, can the above be achieved via the AP?
Thanks for your help