Turning Firewall Logs into IPDR with Kron Telemetry Pipeline

The Challenge

Firewall logs are essential for tracking, auditing, and analyzing network activity — from detecting threats to investigating incidents. However, raw firewall logs are often unstructured, vendor-specific, and inconsistent across environments. This makes them difficult to correlate with subscriber or user activity and hard to retain for long-term regulatory or forensic use. 

In Türkiye, Law No. 5651 mandates log retention, integrity protection, and auditable access to network activity records. This has traditionally been implemented via IPDR (Internet Protocol Detail Record) systems in telecom networks. 

But firewalls (enterprise or operator-grade) also play a critical role in generating actionable network logs. 

The Solution: Structured & Contextualized Data Pattern from Firewall Logs 

The Kron Telemetry Pipeline provides a vendor-agnostic way to normalize, enrich, and store firewall logs into IPDR-like records that satisfy both regulatory and operational needs. 

Instead of relying on fixed vendor schemas or hard-coded exports, the Kron Telemetry Pipeline perform following: 

Parse & Normalize: 
Raw firewall events are parsed into a consistent schema including key fields such as: 

• SRC_IP, DST_IP, PORT, ACTION, BYTES_IN, BYTES_OUT, SESSION_DURATION, and PROTOCOL. 

Enrich with Context: 
To meet 5651 correlation requirements, the pipeline enriches firewall logs with session-level metadata such as: 

• Subscriber IP lease data (from DHCP) 

• Authentication details (from RADIUS) 

• NAT translations for mapping public to private IPs. 

Timestamp & Integrity Control: 
Each record is precisely timestamped and digitally signed to support verifiable log integrity — an essential part of 5651 compliance. 

Structured Output (5651 IPDR Format): 
The resulting dataset can be directly consumed by regulatory log collectors or archival systems in IPDR-equivalent format, ensuring it meets audit and traceability requirements.  

Additionally, the Kron Telemetry Pipeline supports storing these structured IPDR logs in a search-optimized database layer, enabling authorized parties to efficiently execute regulatory or forensic queries. This ensures that compliance officers and auditors can quickly retrieve specific user sessions, timestamps, or network events on demand, fulfilling the log-access and retrieval requirements mandated by Law No. 5651. 

Why It Matters: From Logs to Insights (and Audits) 

By integrating firewall telemetry into the 5651 compliance workflow, Kron eliminates the need for manual log conversion or vendor-specific export mechanisms. 

With this approach, operators and enterprises can: 

• Automatically generate 5651-compliant logs from any firewall vendor. 

• Correlate subscriber activity across network functions such as NAT, RADIUS, and DHCP. 

• Maintain end-to-end traceability for every session traversing the network edge. 

• Enable regulatory audits and lawful requests through structured, easily retrievable datasets. 

Summary 

Kron Telemetry Pipeline transforms traditional firewall logs into trusted regulatory evidence — ensuring full compliance with Türkiye’s 5651 law while preserving operational efficiency. 

Instead of fragmented vendor exports or manual IPDR generation, organizations can now leverage a real-time telemetry pipeline to continuously produce validated, context-rich network activity records — directly from the firewall layer. 

Firewall logs are more than a wall of text—they’re valuable telemetry sources when processed right. With Kron Telemetry Pipeline, you can: 

• Automate firewall log parsing and IPDR conversion 

• Support real-time observability and regulatory compliance 

• Create a unified telemetry fabric from diverse sources 

Whether you're managing a telecom network, a large enterprise, or a service provider infrastructure, Kron empowers you to extract maximum insight from firewall logs—all while staying compliant with Türkiye’s evolving legal landscape.