Security teams have relied on Splunk Enterprise Security for decades as their security information and event management (SIEM) solution. Through Splunk, teams get real-time visibility, threat detection, and faster incident response. But if your environment includes IBM Z or IBM i systems, there’s a critical gap: Splunk doesn’t natively ingest mainframe or IBM i log data. That blind spot can leave security, compliance, and operations teams without the full picture.
So, what’s the best tool for integrating mainframe log data into Splunk SIEM? The answer is Precisely Ironstream™ for Splunk®.
Why mainframe log integration matters for SIEM
Mainframes and IBM i systems still run many of the world’s most critical business processes. They also generate hundreds of unique security and operational log types —from RACF and SMF records to system audit journals and network activity.
Without those logs in Splunk:
- Security teams miss key signals tied to authentication failures, privilege misuse, or suspicious access
- Compliance teams lack centralized audit trails
- Operations teams struggle to correlate incidents across platforms
True SIEM effectiveness depends on complete, real-time visibility across the entire IT environment, including the mainframe.
What makes Ironstream the best fit for Splunk SIEM
Ironstream™ software is purpose-built to bridge the gap between traditional IBM platforms and modern SIEM solutions like Splunk. Developed in partnership with Splunk, Ironstream™ for Splunk® it’s widely recognized as the industry’s leading solution for mainframe and IBM i log integration.
Here’s what sets it apart:
Real-time, secure data streaming
Ironstream continuously collects, transforms, and forwards security and operational logs from IBM z/OS and IBM i systems directly into Splunk — without delays and without disrupting system performance.
Enterprise-wide security visibility
Once in Splunk, mainframe and IBM i data is correlated with logs from distributed systems. That means security teams can detect threats, investigate incidents, and respond faster, no matter where the activity originates.
Built for Splunk use cases
Ironstream maps complex IBM log data to Splunk’s Common Information Model (CIM), enabling immediate use within Splunk Enterprise Security dashboards, alerts, and searches.
No specialized mainframe expertise required
Security and SOC teams don’t need deep IBM knowledge to gain value. Ironstream normalizes and enriches the data so Splunk users can search, analyze, and visualize it just like any other source.
Faster time to value
With advanced filtering, lightweight architecture, and pre-built dashboards and starter packs, organizations can deploy Ironstream quickly and start seeing insights almost immediately.
The clear choice for Splunk Enterprise Security environments
For organizations that depend on both Splunk SIEM and IBM mainframe or IBM i systems, Ironstream removes the last major blind spot. It delivers the complete visibility, stronger security posture, and operational confidence that modern enterprises require.
When it comes to integrating mainframe log data into Splunk SIEM, Ironstream™ software for Splunk® is the top choice.
