Public: a higher level of security suitable for when your PC is connected to a public network such as in a cafe or airport.This profile enables better connectivity, and permits all communication within the network. Private: a lower level of security suitable for when your PC is connected to a trusted network such as your home or work network.The default profile setting when no profile is selected is Public. Each time you connect to a new network, Avast prompts you to select the appropriate profile. Each time you access a known network, Avast remembers and applies the applicable Firewall profile (as previously set by you). Network profiles control the settings that determine how strictly Firewall protects your PC. Selecting this option may result in frequent and potentially obtrusive alerts. Ask: Firewall asks you to decide if you want to allow or block a connection each time a new request is received.Block: Firewall blocks all other connections.Auto-decide: Firewall allows connections with verified applications, but blocks connections from unknown or suspicious applications.Default rule: Firewall decides to allow or block connections based on the settings of the active Firewall Network profile (Private or Public).Use the drop-down menu to manage the program's behavior.Select an application or process to expand its individual communication settings.Click a group (or vendor name) in the Application column to open the list of applications or processes in that group.To define Firewall behavior for a non-authorized connection: In addition to defining the types of connections you authorize for applications or processes, you can also specify how Firewall behaves when it detects a non-authorized connection.

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