: It is a powerful tool for detecting proxies and bots. For example, if a User-Agent claims to be "Windows" but the TCP/IP fingerprint scores highly for "Linux," you’ve likely identified a bot or a proxy user.
: It is frequently used in anti-detect and "humanizing" toolsets, such as untidetect-tools
However, altering the deep-level operating system network stack configuration requires root administrative privileges or low-level kernel manipulation. When a system detects an HTTP User-Agent claiming to be "Windows" but the Zardaxt OS scoring links reveal a 100% network stack match for "Linux", an is thrown, instantly exposing a spoofed request. Proxy and VPN Detection zardaxt os scoring link
Instead of searching for an exact database match—which frequently fails due to minor network variations, changing MTU limits, or intermediate ISP routers—Zardaxt utilizes a normalized scoring algorithm.
to provide a real-time breakdown of your own connection's "signature". manually interpret specific TCP flags to identify an OS yourself? : It is a powerful tool for detecting proxies and bots
+-------------------------------------------------------+ | Initial TCP SYN Packet | +-------------------------------------------------------+ | v +-------------------------------------------------------+ | Extract Fields: TTL, Window Size, TCP Options, MTU | +-------------------------------------------------------+ | v +-------------------------------------------------------+ | Zardaxt.py Processing & Normalization | +-------------------------------------------------------+ | v +-------------------------------------------------------+ | Output: Zardaxt OS Scores (Android 57%, Linux 44%) | +-------------------------------------------------------+ The Anatomy of a TCP/IP Fingerprint
A is essentially a URL endpoint or an inter-process communication (IPC) handle that allows external applications to send a payload (e.g., a transaction record, a user session) and receive a score (e.g., 0.00 to 1.00 probability of fraud). It acts as the bridge between the Zardaxt OS kernel and your external infrastructure. When a system detects an HTTP User-Agent claiming
Zardaxt OS Scoring is a heuristic evaluation that estimates the probability of a remote device belonging to a specific operating system class. Unlike active scanners like Nmap that send probes to a target, Zardaxt is . It simply listens to the very first SYN packet TCP 3-way handshake
In the evolving landscape of network security and digital forensics, understanding the operating systems (OS) interacting with your network is paramount. has emerged as a significant open-source, passive TCP/IP fingerprinting tool designed to identify device OS without sending active probes.
[ Incoming Client SYN Packet ] │ ├──► 1. Initial Time-To-Live (TTL) ──► (64, 128, or 255) ├──► 2. TCP Window Size ──────────────► (e.g., 29200 vs 65535) ├──► 3. IP Flags ─────────────────────► (Don't Fragment bit) └──► 4. TCP Options Layout ───────────► (MSS -> SACK -> TS -> NOP -> WS) 1. Initial Time-To-Live (TTL)