Qscan

An ultra-fast intranet scanner featuring port scanning, protocol detection, fingerprint identification, brute force cracking, and vulnerability detection. Supports 1200+ protocols, 10,000+ protocol fingerprints, 20,000+ application fingerprints, and over 10 brute force protocols.

Chinese Documentation | English

🚀 Quick Start Guide

📢 Please take a moment to read this documentation—it will help you quickly get familiar with JYso!

🧐 Usage documentation available on Wiki.

✔ Download the latest version from Releases.

👍 Key Features

Spy mode enables ultra-fast scanning of common B-segments, significantly faster than conventional sequential scanning;
Combines precise port identification with blazing-fast speed:
- Thread pool optimization: Reduces memory allocation and GC overhead;
- Template caching: Minimizes redundant construction;
- Parallel transmission: Maximizes multi-core CPU utilization;
- Batch processing: Reduces system calls;
- Parallel processing pipeline: Parallel receiving, parsing, and processing for maximum efficiency;
- Buffer optimization: Increased channel buffer size to prevent blocking;