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Zorluk: OrtaLog Analysis and SIEM Management

A Security Operations Center (SOC) team is organizing its Security Information and Event Management (SIEM) data pipeline. Match each SIEM data processing phase on the left with its primary operational function on the right.

  • ParsingExtracting structured key-value pairs from raw, unformatted log strings.
  • NormalizationMapping disparate log field names and formats to a common standard schema.
  • AggregationConsolidating duplicate log events to decrease storage and bandwidth usage.
  • CorrelationAnalyzing relationships among events from diverse sources over time to detect threats.

Cevap

Parsing corresponds to extracting structured key-value pairs from raw log strings. Normalization corresponds to mapping disparate log field names to a common standard schema. Aggregation corresponds to consolidating duplicate log events. Correlation corresponds to analyzing relationships among events across diverse log sources over time.
Each SIEM processing phase has a distinct function: Parsing extracts key-value pairs from raw log text; Normalization maps extracted fields to a common taxonomy; Aggregation deduplicates log events to save storage; and Correlation analyzes logic across multiple sources to identify complex security incidents.

Adım Adım Çözüm

1
Identify the primary purpose of log parsing.
Parsing interprets raw log syntax to extract discrete data fields.
Raw logs arrive as unstructured text and must be broken into usable fields.
2
Identify the primary purpose of log normalization.
Normalization aligns field names across different vendors into a unified schema.
Different devices name fields differently (e.g., src_ip vs client_ip).
3
Identify the primary purpose of log aggregation.
Aggregation combines repeating identical log entries into summary records.
High-volume logging can quickly deplete storage if duplicates are not consolidated.
4
Identify the primary purpose of event correlation.
Correlation evaluates multi-source log rules over time windows.
Detecting complex attacks requires evaluating sequences of events across multiple hosts.

Anahtar Kavram

SIEM Log Ingestion and Processing Pipeline
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