NW Cfg: Investigation Configuration Panel

Document created by RSA Information Design and Development on Sep 14, 2017Last modified by RSA Information Design and Development on Oct 13, 2017
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The System view > Investigation Configuration panel, which provides the user interface for Administrators to configure the system-wide settings that NetWitness Suite Investigation uses when analyzing data and reconstructing an event.

The Investigation Configuration settings allow an administrator to manage application performance for Investigation. 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.

Note: Analysts can also set individual preferences for Investigation in the Profiles view and in the Navigation view. 

Workflow

Investigation Configuration Work flow

What do you want to do?

                       
Role I want to ...Show me how
AdministratorConfigure navigate, events and context lookup settingsConfigure Investigation Settings
AdministratorClear reconstruction cache for servicesConfigure Investigation Settings

Related Topics

Quick Look

The Investigation Configuration panel has three tabs: Navigate, Events, and Context Lookup.

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.

Navigate Tab

The following figure shows the Navigate tab.
Navigate tab in the Investigation panel

             
1Displays the Investigation Configuration Panel.
2Displays the Navigate Tab.

Toolbar and Features

The Navigate tab has two sections: Render Threads Setting and Parallel Coordinates Settings.

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.

Render Threads Setting in Navigate Tab

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 Suite the administrator can configure parallel coordinates limits here.

Note: For better performance, recommended settings are Meta Values Scan Limit: 100000 and Meta Values Result Limit: 1000-10000

Parallel Coordinates Settings in Navigate tab

The following table describes the Parallel Coordinates Settings.

                     
ParameterDescription
Meta Values Scan LimitThe maximum number of meta values scanned within the Investigation time range the analyst has selected in the Navigate view. Possible values are in the range of 1,000 to 10,000,000. The default value is 100,000.
Meta Values Result LimitThe maximum number of meta values returned within the Investigation time range the analyst has selected in the Navigate view. Possible values are in the range of 100 to 1,000,000,000. The default value is 10,000.

Quick Look

Events Tab

The following figure shows the Events tab.

Event Tab in investigation panel

Procedures associated with this panel are provided in Standard Procedures.

             
1Displays the Investigation Configuration Panel.
2Displays the Events Tab.

Toolbar and Features

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.

Event Search Settings

The Event Search Settings help to limit the number of events scanned when searching in the Events view.

Event Search Settings in Events Tab

The following table describes the Event Search Settings.

                 
ParameterDescription
Events Scanned LimitThe maximum number of events to scan when searching in the Events view.
Events Result LimitThe maximum number of results to return when searching in the Events view.

Reconstruction 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.

Note: An override to the Reconstruction Settings section is configurable for web views (under Web View Reconstruction Settings).

Reconstruction Settings in Investigation tab

The following table describes the Reconstruction Settings features.

                         
ParameterDescription
Maximum number of packets for a single eventThis setting protects performance by placing a limit on the number of packets processed for a single event reconstruction.

Possible values are in the range from 100 to 10,000 packets, using manual entry or increments of 100 from the selection list. The default value is 100 packets.
Maximum size, in bytes of a single eventThis setting protects performance by placing a limit on the maximum size, in bytes, of a single event reconstruction.
Possible values are in the range from 102,400 to 104,857,600 bytes, using manual entry or increments of 10,240 from the selection list. The default value is 2,097,152 bytes.

Allow Full Packet Reconstruction Override

When this checkbox is selected, the analysts is provided with a Use More Packets button in the Reconstruction Panel. This enables the NW Server to regenerate events using all the packets available in the Event.

Allow Parsing of HTML Charset for Web pagesThis option allows the NetWitness Server to identify the web page encoding defined in the HTML meta tag instead of the HTTP header. The default setting is disabled.

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 Suite 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.

Web View Reconstruction Settings in events tab

The following table describes the Web View Reconstruction Settings.

                                     
ParameterDescription
Enable supporting files for web viewThis option determines how web views that have related data in other sessions are reconstructed. The default setting is enabled.

When enabled, supporting files from related events can be used in the reconstruction of web views. Additional settings for calibrating the performance are enabled in this section, and Analysts have the option to enable CSS use in reconstructions.

When disabled, supporting files from related events are not used and the setting for analysts to enable CSS use in reconstructions is disabled.
Time Range to Scan Related EventsAvailable when Enable supporting files for web view is checked. Configures the time range within which NetWitness Suite scans related events that are of the service type HTTP and have the same source address as the target event. This is a value between 0 and 60.
  • Seconds Before Target Event
  • Seconds After Target Event
Limit the number of related events processedAllows configuration of the maximum number of related events that NetWitness Suite scans within the specified time range to discover supporting files for the target event. By default, this is disabled.  When enabled, the Maximum Related Events field becomes active.
Max Related EventsWhen Limit the number of events processed is enabled, this field specifies the maximum number of related events that NetWitness Suite scans within the specified time range to discover supporting files for the target event.

This is a selectable value between 10 and 1,000, using an increment of 100. The default value is 100.
Limit the number of packets and size of each related event
 
Overrides the general settings for the maximum number of packets and maximum size (in bytes) for individual related events.
Maximum Number of Packets for a Single Related EventPossible values are in the range from 100 to 10,000 packets, using increments of 100 from the selection list. The default value is 100 packets.
Maximum Size, in Bytes, of a Single Related EventPossible values are in the range from 102,400 to 104,857,600 bytes, using increments of 10,240 from the selection list. The default value is 524,288 bytes.

Reconstruction Cache Settings

In some cases, the reconstruction cache can present incorrect content; for this reason NetWitness Suite 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.

Reconstruction Cache Settings in Events Tab

The following table describes the Reconstruction Cache Settings features.

                       
FeatureDescription
Selection boxSelection box in individual rows and in the title bar allow selection of one or more, or all services that need to have cache cleared manually.
Clear Cache for Selected ServicesClears the reconstruction cache for each selected service.
Clear Cache for All ServicesClears the reconstruction cache for all services.

Quick Look

Context Lookup Tab

The following figure shows the Context Lookup tab.

Context Lookup Tab in investigation panel

Procedures associated with this panel are provided in "Manage Meta Type and Meta Key Mapping" in the Context Hub Configuration Guide.

             
1Displays the Investigation Configuration Panel.
2Displays the Context Lookup Tab.

Toolbar and Features

The Context Lookup tab enables the administrator to configure the Investigation meta keys and meta type mapping. The administrator can add or remove meta keys found in Investigation to the list of meta types supported by Context Hub service.

The following table describes the features of the Context Lookup tab.

                   
FeatureDescription
Adds an meta key to the selected meta type supported by Context Hub.
Deletes the meta key from the selected meta type.
ApplySaves the changes made to the Context Lookup tab.
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