Installation manual

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4.1.3.1.2 Active mode
ESET Mail Security also contains the Web browsers feature, which allows you to define whether the given
application is a browser or not. If an application is marked as a browser, all communication from this application is
monitored regardless of the port numbers involved.
The Web browsers feature complements the HTTP checking feature, as HTTP checking only takes place on
predefined ports. However, many Internet services utilize changing or unknown port numbers. To account for this,
the Web browser feature can establish control of port communications regardless of the connection parameters.
The list of applications marked as web browsers is accessible directly from the Web browsers submenu of the
HTTP, HTTPs branch. This section also contains the Active mode submenu, which defines the checking mode for
Internet browsers.