The ADMIN > System > Investigation Configuration panel provides the user interface for administrators to configure the system-wide settings that NetWitness Platform Investigate uses when analyzing data and reconstructing an event.
The settings allow an administrator to manage application performance for Investigate. As analysts analyze and reconstruct sessions that they are investigating, performance can be affected by operations that involve loading, searching, visualizing, and reconstructing large amounts of data.
What do you want to do?
The Investigation Configuration panel has four tabs: Navigate, Events, Context Lookup, and Event Analysis.
Though most fields in the tabs have a selection list with specific increments through the range of possible values, you can enter a value within the allowed range manually. An invalid entry is signaled by the field highlighted in red. When valid values are selected, clicking Apply in a given section puts the changes into effect immediately.
Render Threads Setting
The Render Threads Setting is a selectable value between 1 and 20, which defines the number of concurrent (Values) loads in the Navigate view. The default value is 1.
Parallel Coordinates Settings
The Parallel Coordinates Settings apply to the Parallel Coordinates visualization in the Navigate view. There is a fixed limit on the amount of data that can be rendered as a parallel coordinates chart. In NetWitness Platform the administrator can configure parallel coordinates limits here.
The following table describes the Parallel Coordinates Settings.
The Events tab provides configurable settings that affect the investigation of events. This tab has four sections: Event Search Settings, Reconstruction Settings, Web View Reconstruction Settings, and Reconstruction Cache Settings. The following figure shows the Events tab.
Event Search Settings
The Event Search Settings help to limit the number of events scanned when searching in the Events view.
The following table describes the Event Search Settings.
As analysts reconstruct sessions that they are investigating, some events can be very large and contain many thousands of source packets. Reconstructing these sessions, especially in a multi-user environment, can degrade application performance. The Reconstruction Settings allow an administrator to limit the number of packets and the size of a single event during reconstruction.
The following table describes the Reconstruction Settings features.
Web View Reconstruction Settings
The Web View Reconstruction Settings allow an administrator to configure settings that improve the reconstruction of a web view by scanning and reconstructing related events that contain the same supporting files. When NetWitness Platform is reconstructing a web view that spans multiple events, it is possible to improve the reconstruction of the target event by scanning and reconstructing related events that contain the same supporting files, such as images and cascaded style sheet (CSS) files.
- The only related events scanned are HTTP service type events with the same source address as the target event, and a time stamp within a specified time range before and after the target event.
- The maximum number of related events to scan is configurable.
Clicking on the Advanced Settings option displays all configurable settings in this section.
The following table describes the Web View Reconstruction Settings.
Reconstruction Cache Settings
In some cases, the reconstruction cache can present incorrect content; for this reason NetWitness Platform removes reconstructions that are older than a day from the cache. The cache is cleaned every day at midnight. Between the daily cache cleanings, certain actions may result in stale cache being used for a reconstruction, and if the need arises, administrators can manually clear cache for one or more services that are connected to the current NetWitness Server.
The following table describes the Reconstruction Cache Settings features.
Context Lookup Tab
Procedures associated with this panel are provided in "Manage Meta Type and Meta Key Mapping" in the Context Hub Configuration Guide. The following figure shows the Context Lookup tab.
The Context Lookup tab enables the administrator to configure the Investigate meta keys and meta type mapping. The administrator can add or remove meta keys found in Investigate to the list of meta types supported by Context Hub service. NetWitness Respond and Investigate use these default mappings for context lookup. For information about adding meta keys, see "Configure Context Hub Data Source Settings" in the Context Hub Configuration Guide.
The following table describes the features of the Context Lookup tab.
Event Analysis Tab
The following figure shows the Event Analysis tab.
The Event Analysis tab provides configurable settings that affect the number of events displayed in the Events panel. This tab has two sections: Events Panel Settings and Event Limit per User Role.