# GQUIC Protocol Analyzer

GQUIC Protocol Analyzer is a Network Detection and Response product. It runs on-premises. Pricing is free.

A Zeek-based protocol analyzer that parses GQUIC traffic to extract connection metadata and create fingerprints for detecting anomalous network behavior.

Checked October 2026.

## What is GQUIC Protocol Analyzer?

GQUIC Protocol Analyzer is a Zeek-based network protocol analyzer designed to parse and examine GQUIC traffic for logging and detection purposes. The tool analyzes the initial communication exchange between clients and servers using the GQUIC protocol, extracting detailed information from client hello packets and server rejection packets.

The analyzer supports GQUIC protocol versions Q039 through Q046, providing comprehensive coverage for modern GQUIC implementations. It integrates directly with the Zeek network security monitoring platform, requiring installation through source compilation with proper Zeek distribution paths.

A key feature of this analyzer is its fingerprinting capability using the "CYU" method. This fingerprinting technique identifies GQUIC versions and extracts tags present in client hello packets, creating unique fingerprints by concatenating version information with hyphen-delimited tag sequences. This approach enables the detection of anomalous and potentially malicious GQUIC traffic patterns.

The tool generates structured logs containing connection metadata, protocol version information, and extracted packet details. Installation requires standard build tools and involves configuring the analyzer against an existing Zeek distribution, followed by compilation and installation steps.

Tags: Packet Analysis, Protocol Analysis, Network Monitoring, Anomaly Detection, Zeek, Fingerprinting

## Where it fits in your security program (NIST CSF 2.0)

- [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity.

## Quick facts

- Category: [Network Security](https://cybersectools.com/categories/network-security) · [Network Detection and Response](https://cybersectools.com/categories/ndr)
- Deployment: On-Premises
- Company size fit: Mid-Market, Enterprise
- Pricing model: Free
- GitHub stars: 80
- Website: github.com

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best SASE Solutions for Business](https://cybersectools.com/shortlists/best-sase-solutions).

## GQUIC Protocol Analyzer FAQ

### What is GQUIC Protocol Analyzer?

GQUIC Protocol Analyzer is a product in the Network Detection and Response category. It covers Packet Analysis, Protocol Analysis and Network Monitoring.

### What is the pricing for GQUIC Protocol Analyzer?

GQUIC Protocol Analyzer is free. Download and setup instructions are at https://github.com/salesforce/GQUIC_Protocol_Analyzer/.

### What are alternatives to GQUIC Protocol Analyzer?

Alternatives to GQUIC Protocol Analyzer listed on CybersecTools:

1. [Innspark Flowgen](https://cybersectools.com/tools/innspark-flowgen) - Network probe providing traffic visibility and analysis via NetFlow and IPFIX protocols (Commercial)
2. [Corelight Open NDR Platform](https://cybersectools.com/tools/corelight-open-ndr-platform) - Network detection and response platform with IDS, NSM, and threat intel. (Commercial)
3. [FirstWave opFlow](https://cybersectools.com/tools/firstwave-opflow) - NetFlow/IPFIX traffic analyzer for network visibility and anomaly detection. (Free)
4. [Telesoft FlowProbe](https://cybersectools.com/tools/telesoft-flowprobe) (Commercial)
5. [Exabeam NetMon](https://cybersectools.com/tools/exabeam-netmon) - Network monitoring and detection solution for threat analysis (Commercial)

Compare all GQUIC Protocol Analyzer alternatives at [https://cybersectools.com/alternatives/gquic-protocol-analyzer](https://cybersectools.com/alternatives/gquic-protocol-analyzer)

### What deployment and organization size does GQUIC Protocol Analyzer fit?

GQUIC Protocol Analyzer is available as on-premises software. It is listed for mid-market companies and enterprises. It is free.

## Compare GQUIC Protocol Analyzer with similar solutions

- [GQUIC Protocol Analyzer vs Innspark Flowgen](https://cybersectools.com/compare/gquic-protocol-analyzer-vs-innspark-flowgen)
- [GQUIC Protocol Analyzer vs Corelight Open NDR Platform](https://cybersectools.com/compare/corelight-open-ndr-platform-vs-gquic-protocol-analyzer)
- [GQUIC Protocol Analyzer vs FirstWave opFlow](https://cybersectools.com/compare/firstwave-opflow-vs-gquic-protocol-analyzer)

All alternatives to GQUIC Protocol Analyzer: [/alternatives/gquic-protocol-analyzer](https://cybersectools.com/alternatives/gquic-protocol-analyzer)

---

Source: https://cybersectools.com/tools/gquic-protocol-analyzer

For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL).

More on GQUIC Protocol Analyzer: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md