The Analysis Page › Use Filters to Customize Data in the Display Area › Global Filters › Modify a Global Filter

Modify a Global Filter

You can change a global filter to restrict the data included in an analysis.

Note: If you change the Logical Ports global filter, you effectively change the entire dataset for the selected analysis.

Follow these steps:

1. Click [change] next to the global filter you want to change in the Analysis pane.

   The Global Filters dialog opens.

2. Click the tab that corresponds to the global filter you want to change. For example, to filter the analysis by an application running on the monitored network, click the Application tab.

   The tab displays a list of all known applications whose traffic is reflected in the captured packets from the time frame you are viewing.

3. Select an application in the list. For example, select "Simple Mail Transfer Protocol."

   The selected application appears as Currently Selected. The application port number appears in parentheses. The selected application also filters the lists of items on the other tabs in the Global Filters dialog.

4. Click another tab to apply more restrictions to the data included in the analysis.

   For example, click the Server tab. Only servers that are running the selected application (SMTP, in this example) are shown in the list. Select a server.

5. Click OK.

   The chart and table for the current analysis are filtered to show only data from the SMTP application and its application servers.