Symantec Web Gateway can allow, block, or monitor Internet access for applications with the application control policy settings. For example, you can prevent peer-to-peer sharing, streaming media, and Internet-dependent games from accessing the Internet for some or all computers in your network. You can configure access by category or by the specific programs that are known to Symantec Web Gateway.
See About policies.
Symantec Web Gateway contains network signatures for a large number of commonly used Internet applications. However, you cannot monitor or block any Internet applications that Symantec Web Gateway is not aware of.
If you block Internet access for an application, the application typically does not function normally or displays an error to the user. The cause of the malfunction may not be apparent to the user. As a best practice, you should notify users of the types of applications that you block as part of your site policy.
To configure policies for Internet applications