This tab allows you to select a policy for client firewalls to use and the mode they are to run in. By default, a firewall runs in background mode to eliminate user interference, save system resources, and for a systems administrator to block unwanted traffic or content in a way that's completely hidden from a user. The default policy is Allow most. If some of a user’s custom applications that require network access are blocked and you consider the user experienced enough to manage all the network access request messages, you can turn the background mode off and enable Rules.
