Build FortiSIEM Parsers in Minutes —
Not Days.
Parser Studio turns sample logs into working FortiSIEM custom parser XML — no hand-written regex. Paste a log, let AI suggest field mappings, download the parser, and validate it locally with the built-in emulator before pushing to production. Built for SOC engineers, MSSPs, and content developers who run FortiSIEM at scale.
From Sample Log to Production Parser
Four steps. No regex required. Stop wrestling with collectFieldsByRegex templates and let the
tool do the boring part.
Paste a log
One line for single-log mode, or paste/upload a CSV / batch file for the templating engine.
CSV with a Raw Event Log column is auto-detected.
Map fields
Tokens become click-to-map chips. Pick a FortiSIEM Event Attribute for each — or hit AI Suggest for a confidence-scored first draft.
Generate XML
The engine emits a complete <eventParser> with the right
gPat* patterns, recognizer, and event-type setters. Versioned automatically.
Test & iterate
Built-in emulator runs the parser against any log or full sample. Coverage report shows % matched, top misses, and field-extraction frequency. Tighten and regenerate.
AI-Assisted Field Mapping
Powered by GPT-4.1 Mini, constrained to your real tokens and real FortiSIEM Event Attributes. Each suggestion comes with a confidence score — accept, edit, or reject. No hallucinated fields, no invented token IDs. Cuts a typical mapping session from 20 minutes to under 60 seconds.
Batch Template Mining
Drop in 10,000 sample logs. Parser Studio normalises away IPs, integers, timestamps, and other
volatile values, then groups equivalent logs into templates. The most frequent patterns become
<case> branches in a switch — one parser handles all your event variants.
Coverage Reports
Stop shipping parsers and hoping. Run yours against a representative log sample and get a measurable artefact: % logs matched, top miss patterns with sample logs, and a histogram of fields extracted. Use it for client sign-off and regression tracking across versions.
Parser Versioning
Every generation creates a new immutable version. Roll back to v3 if v4 regressed. Diff parsers across versions to understand what changed. Audit trail for every parser in production — useful for FortiSIEM content packs reviewed by client SOCs.
Site-Aware Field Catalog
Import your target FortiSIEM deployment's Event Attributes export (CSV) and the field picker covers every custom attribute, every version-specific addition. Without it you're parsing against a generic starter list — fine for a POC, not for production content development.
REST API
Generate parsers and run the emulator from your own scripts. POST /api/build with
a sample log and "auto": true returns a complete parser XML.
POST /api/emulate validates any parser against one or many logs. Token-based auth
(OgmaPS-…), no IP allowlist required.
Where Custom Parsers Pay Off
SAP & Tally Audit Logs
India-specific ERP and accounting platforms with no out-of-box FortiSIEM coverage. Build a parser once, get full transaction-level visibility.
Custom Banking Core
Proprietary core banking, treasury, and trade-finance systems where every bank ships logs in a slightly different shape. Per-tenant parsers, version-controlled.
Legacy Network Gear
Old Cisco IOS, Juniper, F5, and 3rd-party load balancers that produce well-formed but unsupported logs. Parser Studio infers the templates and ships a switch/case parser.
In-House Security Tools
Internal DLP, in-house threat-hunting tools, custom honeypots, scripts that emit syslog. Get them into FortiSIEM with the same correlation rules as commercial sources.
Compliance-Driven Capture
CERT-In / RBI CSCRF / SEBI CSCRF / DPDPA mandates require evidence of monitoring. Custom parsers turn unparsed text into queryable, exportable evidence.
MSSP Content Packs
Build once, deploy across every client. Versioned parsers, coverage reports, and the API let you maintain a portfolio of parsers as a product.
Frequently Asked Questions
Stop Hand-Writing FortiSIEM Regex
Open Parser Studio in your portal, upload a sample log, and you'll have a working parser before your next coffee. Run the emulator, ship the XML, move on to detection content that actually catches threats.