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Modifying Default Provider Settings

  • Articolo

To enhance the capture configuration of a Live Trace Session, you can modify the following aspects of ETW-instrumented providers:

  • Driver/provider-level filtering — as described in Common Provider Configuration Settings Summary, you can configure various low-level Fast Filters for PEF providers to introduce a selectivity factor to your Live Trace Sessions that improves performance, for example, with the Microsoft-PEF-NDIS-PacketCapture provider. You can also configure special stack filters and packet traversal paths at the driver level for Trace Scenarios that use the Microsoft-Windows-NDIS-PacketCapture provider. In addition, you can employ WFP Layer Set filters in Trace Scenarios that use the Microsoft-PEF-WFP-MessageProvider in order to control the direction in which packets are passed or blocked at the Transport Layer.

    Filtering at the driver/provider level improves speed because it reduces the number of messages that will be subject to the Message Analyzer Runtime parsing process, which includes Session Filtering that requires additional parsing — providing that a Session Filter is configured prior to running a Live Trace Session.

  • Event filtering — as described in System ETW Provider Event Keyword/Level Settings, you can specify event Keyword and error Level filter settings for numerous system ETW Providers to enable selective event logging via ETW, which subsequently focuses the events that Message Analyzer captures.

Configuring Provider-Level Filters

The indicated provider setting types are accessible from the Provider or ETW Core tab of the Advanced Settings dialog that you can open by clicking the Configure link for message providers that display in the ETW Providers list on the Live Trace tab of the New Session dialog in Live Trace Session configuration. The following is an overview of the filtering features that enable you to create the indicated configurations:

  • Fast Filter Groups — configure Groups of logically chained Fast Filters and assign them to selected adapters in Trace Scenarios that use the Microsoft-PEF-NDIS-PacketCapture provider, for example, the Local Network Interfaces scenario on computers running the Windows 7 or Windows 8 operating system. Specify these settings in the Advanced Settings - Microsoft-PEF-NDIS-PacketCapture dialog during Live Trace Session configuration.

  • Multiple Fast Filters — configure one or more Fast Filters in Trace Scenarios that use the Microsoft-PEF-WFP-MessageProvider, for example, the Loopback and Unencrypted IPSEC scenario. Specify these settings in the Advanced Settings – Microsoft-PEF-WFP-MessageProvider dialog during Live Trace Session configuration.

  • WFP Layer Set Filters — selectively enable or disable filters that pass or block inbound, outbound, or bidirectional packet traffic at the Transport Layer in Trace Scenarios that use the Microsoft-PEF-WFP-MessageProvider. Specify these settings in the Advanced Settings – Microsoft-PEF-WFP-MessageProvider dialog during Live Trace Session configuration.

Note

You also have the option to log dropped packet information, which includes reason and layer statistics. Enable this function by placing a check mark in the Select Discarded Packet Events check box in the Advanced Settings dialog for the Microsoft-PEF-WFP-MessageProvider.

  • NDIS and Extension Stack Filters — specify the layers on which packets are intercepted in the NDIS stack or Hyper-V-Switch extension stack, in Trace Scenarios that use the Microsoft-Windows-NDIS-PacketCapture provider, for example, the Local Network Interfaces (Win8.1 and later) scenario. You can also configure special filters such as Truncation, packet traversal Direction, EtherTypes, IP Protocol Numbers, Mac Addresses, and IP Addresses. Specify these filtering configurations in the Advanced Settings - Microsoft-Windows-NDIS-PacketCapture dialog during Live Trace Session configuration.

  • Hostname and Port Filters — configure a Hostname Filter to restrict the capture of HTTP operations initiated by the client browser to requests and responses to and from a single web host, in Trace Scenarios that use the Microsoft-PEF-WebProxy provider, for example, the Pre-Encryption for HTTPS scenario. Configure a Port Filter to limit the traffic you capture to a particular HTTP port, such as 80, 443, or 8080. Specify these filtering configurations in the Advanced Settings - Microsoft-PEF-WebProxy dialog during Live Trace Session configuration.

  • ETW Event and Error Filters — set the event Keyword and/or error Level configuration of system ETW providers by specifying settings on the ETW Core tab of the Advanced Settings dialog for any provider that displays in the ETW Providers list of the New Session dialog.

Note

For system ETW Providers (Windows components that have been instrumented as ETW event providers), the only additional configuration that you can specify are modifications to the event Keyword and error Level filtering settings; however, not all system ETW Providers make Keyword settings available for filtering. System ETW Providers, such as the Microsoft-Windows-LDAP-Client, are listed in the Add System Providers dialog, which is accessible from the Add Providers drop-down list on the ETW Providers toolbar on the Live Trace tab of the New Session dialog, as described in Adding a System ETW Provider.

More Information
To learn more about how to configure common provider settings, see the Common Provider Configuration Settings Summary.
To learn more about how to configure settings for the Microsoft-PEF-NDIS-PacketCapture provider, see Using the Advanced Settings - Microsoft-PEF-NDIS-PacketCapture Dialog.
To learn more about how to configure settings for the Microsoft-Windows-NDIS-PacketCapture provider, see Using the Advanced Settings - Microsoft-Windows-NDIS-PacketCapture Dialog.
To learn more about how to configure settings for the Microsoft-PEF-WFP-MessageProvider, see Using the Advanced Settings- Microsoft-PEF-WFP-MessageProvider Dialog.
To learn more about configuring ETW event Keyword and error Level settings, see System ETW Provider Event Keyword/Level Settings.