Resources about network security, including: Proxy/GFW/ReverseProxy/Tunnel/VPN/Tor/I2P, and MiTM/PortKnocking/NetworkSniff/NetworkAnalysis/etc。More than 1700 open source tools for now. Post incoming.

A web client port-scanner written in GO, that supports the WASM/WASI interface for Browser WebAssembly runtime execution.

A minimal tool that hides your online assets from online security scanners, researchers and hackers.

Layer 4 Single Packet Authentication Linux kernel module utilizing Netfilter hooks and kernel supported Berkeley Packet Filters (BPF)

A port-knocking implementation in Rust

OpenSPA - An open and extensible Single Packet Authorization (SPA) protocol

A port-knocking utility implemented in Go.

Authenticating port knocker - Written in Rust

🚪HTTP-Knocking hides a Web server and open it by knocking sequence: Hide Web server until your knocks

Hybrid Port Knocking System

🚪👊 Yet another port knock client

Not your average port knocker. A web-based service written in pure PHP that opens protected TCP and UDP ports in response to encrypted requests from a correctly configured client for a limited but renewable time period. MIT or LGPL.

Port Knocking attack tool

🚪 A port knocking client written in Go

Some of my security-related coding projects for OpenBSD: A kernel-based user-profile intrusion detection system (FUPIDS) and an ICMP-based "port-knocking" service (openportd).

nfqueue/ipset-based port knocking using JWT (JSON Web Token) as SPA (Single Packet Authorization)

Port-knocking client with multiple hosts support

Simple port knocking implementation using web requests. 使用 web 请求的简单 port knocking 实现。

Port Knocking in Perl (But also compiled for Win64)

Ultimate Port Knocker supporting continuous knocking