Search Heads, Indexers, and Forwarders in a Distributed Environment Indexer This is where indexing takes place and is where Splunk strives compared to its competitors. Splunk needs to make sense of this data so when you can query and search it. You are throwing terabytes of data, all of which is structured in unique ways. It needs to accomplish two things: indexing and searching. Match the trigger conditions of a correlations searchĪdaptive Response Framework The Architecture of Splunk SIEM.There are two ways to invoke response actions: Enterprise Security can integrate with all kinds of technologies like vulnerability management ticketing systems, or endpoint agents. The special part are the technology add-ons. A splendid example often used by mature teams is to automatically create ServiceNow tickets via adaptive response actions. Adaptive Response allowed preconfigured actions to automatically trigger by correlation searches. Our favorite piece of the technology is this one. These live in the risk index which contain a:Ī risk score is a single metrics that shows the relative risk of a device or user over time whereas a risk object represents a system, a user, or an unspecified other. When a match is found, an alert is generated as a notable event, a risk modifier, or both.Įvents that modify risk are called risk modifiers. Correlation searches search for a conditional match to a question. Splunk ES comes with built in correlation searches for risk analysis and to correlate machine data with asset and identity data. Using the gathered identities, an Engineer can build risk modeling on their activity, base lining it on normal behavior. The Risk Analysis framework goes hand in hand with the Identity framework. The types correspond to the KV store collections where the threat intel resides: The framework supports a large amount of threat intelligence types. With this, an engineer can correlate existing data with threat intelligence to create notable events on matching activity. The Threat Intelligence framework does what the name implies: consuming and managing threat feeds. Notable Event Framework Threat Intelligence This framework allows analysts to triage and prioritize those triggered events. When a match is found by the correlation, trigger a notable event. Most notable events trigger via correlation searches, but engineers can also create them manually.Īn example could be correlating outbound traffic against confirmed C2 servers supplied by threat intelligence. Only available in Enterprise Security, an engineer can build notable events to better manage the ownership, triage process, and the state of incidents. Asset and Identity Framework Notable Events Analysts can use these saved searches, lookup tables, and dashboards to identify assets and users within their networks.
#SPLUNK AND SIEM MAC#
To name a couple, these fields could be an IP, DNS, or MAC address or a LDAP username.Įngineers can create custom data collection add-ons to extract and prepare this data for ingestion by Splunk ES and dispatch saved searches to create lookup tables. Sometimes events have fields or properties that include information relevant for identifying an asset or user. It can do everything Enterprise can but more including the following frameworks:Ĭollection of Frameworks Asset and Identity Correlation Splunk Enterprise Security: Splunk ES DashboardĮnterprise Security comes with all the base Enterprise features, but it is when Splunk becomes a SIEM. Build correlation rules for monitoring and alerting.We have seen companies utilize the base enterprise flavor to function as a SIEM as well, but most have the Enterprise Security add-on.
#SPLUNK AND SIEM SOFTWARE#
In short, Splunk Enterprise is a software whereas Splunk Enterprise Security is an application on top of it which turns it into a true SIEM. Technically, it is a data analytics platform that makes sense of copious amounts of data. It is the basic form of the tool that can come in two flavors: On premise or cloud. The real power of Splunk is to ingest any type of human readable data.īefore going too deep into Splunk, it is worth explaining general concepts. Cyber security engineers build correlation rules on top of the data to trigger notable events in real-time. It is a SIEM that analysts use to analyze and visualize large amount of data. Splunk is a popular log management tool cyber security professionals use to address the challenge of responding to tons of alerts and logs.
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