Elasticsearch cluster nodes can be accessed by various clients such as the following:
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Sentinel: to fetch and present event data in the Event Visualization dashboard.
Spark jobs running in the YARN NodeManager nodes: to perform bulk indexing of the events received from Kafka. (for SSDM)
Collector Manager: to perform bulk indexing of events in Sentinel with traditional storage.
Other external clients: to perform custom operations such as custom analytics.
Sentinel provides a security plug-in for Elasticsearch named elasticsearch-security-plugin that authenticates and authorizes access to Elasticsearch.
Sentinel Ip Address
Azure Sentinel Ip Address
The plug-in uses either a SAML token or a whitelist for validation depending on how the clients connect:
Sentinelone Ip Address
When a client sends a SAML token along with the request, the plug-in authenticates the token against the Sentinel authentication server. Upon successful authentication, the plug-in allows access only to the filtered events that the client is authorized for.
For example, the Event Visualization dashboard (client) displays only those events from Elasticsearch that a user's role is authorized to view.
For information about roles and permissions, see
Creating a Role
in the Sentinel Administration Guide.When a client cannot send a SAML token, the plug-in checks its ’whitelist of legitimate clients. Upon successful validation, the plug-in allows access to all events without filtering.
When a client does not send a valid SAML token or is not allowed by the whitelist, the plug-in considers it as an illegitimate client and denies access to the client.
This section provides information about installing and configuring the Elasticsearch Security plug-in: