#TCP handshake
42 related articles
·3 min
Warpgate 0.27 Released: Open-Source Bastion Host Adds RDP/VNC and Cluster Support
Warpgate 0.27 adds transparent RDP/VNC proxy, OTP/SSO integration, cluster scaling, and TLS hot-reload. A FOSS alternative to Teleport requiring no agents or clients for unified privileged access.
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·3 min
DANE/TLSA Record Mismatch Causing Silent Email Loss: From Packet Capture Troubleshooting to Root Cause Resolution
A real-world case study of silent email loss caused by DANE/TLSA record mismatch. From empty logs to tcpdump packet capture revealing TLS handshake failures, with TLSA update procedures and automation strategies.
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·6 min
Securely Exposing Self-Hosted Services via VPS: Architecture & Practical Guide
Learn how to securely expose self-hosted services via VPS using WireGuard tunnels, Pangolin, and reverse proxies — enabling client-free access to Plex, Immich, and more while hiding your home IP.
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·3 min
Baileys: A Deep Dive into the Open-Source WhatsApp Automation API That Requires No Browser
Deep dive into Baileys, a WebSocket-based WhatsApp Web API requiring no browser. Supports multi-device, chatbots, and group automation with low resource usage.
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·6 min
qsa.sh: Complete an External Server Security Scan with a Single curl Command
qsa.sh is a minimalist external server security scanning tool. Just run curl qsa.sh to get a port exposure and vulnerability report for your public IP in 30 seconds. Learn its technical architecture and pricing.
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·3 min
Network Doctor: An Open-Source Terminal Tool for Network Fault Diagnosis
Network Doctor is an open-source terminal network diagnostic tool that integrates ping, dig, curl, and traceroute, automatically detecting connectivity in stages and outputting fault conclusions in natural language.
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·3 min
What Happens After You Click a Link? A Complete Technical Breakdown
From DNS resolution, TCP handshake, and TLS encryption to the Blink rendering engine — a detailed breakdown of what happens after you click a link.
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·6 min
AmneziaVPN Deep Dive: The Open-Source Powerhouse for Self-Hosted, Censorship-Resistant VPN
Deep dive into the AmneziaVPN open-source client: AmneziaWG anti-DPI obfuscation, self-hosted VPS deployment, multi-protocol support, and cross-platform privacy.
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Pumpkin: A High-Performance Minecraft …
·2 min
Pumpkin: A High-Performance Minecraft Server Written in Rust — Goodbye to Java GC Stutters
Pumpkin is an open-source Minecraft server rewritten from scratch in Rust. Learn how it eliminates Java GC pauses, reduces resource usage, and its current limitations.
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·2 min
Stone+ Beginner's Guide: Set Up Your AI Coding Environment in 1 Minute
A complete Stone+ (StonePlus) setup guide covering environment scan, API config, proxy detection, model validation, and end-to-end verification. Get your AI coding environment running in 1 minute.
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croc: Open-Source CLI File Transfer To…
·2 min
croc: Open-Source CLI File Transfer Tool — Secure, Cross-Platform, Zero Config
croc is an open-source Go-based CLI file transfer tool with PAKE end-to-end encryption. Cross-platform, resumable, zero config — send files securely with one command.
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zapret: A Deep Dive into the 30K-Star …
·2 min
zapret: A Deep Dive into the 30K-Star Anti-Censorship Tool — DPI Bypass Techniques and Use Cases
A deep dive into zapret-discord-youtube, the 30K+ star GitHub DPI bypass tool. Learn how packet fragmentation, TTL manipulation, and SNI evasion restore access to Discord and YouTube — and what risks to consider.
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Mesh LLM: A Practical Exploration of B…
·3 min
Mesh LLM: A Practical Exploration of Building a P2P Distributed AI Inference Network with iroh
Mesh LLM leverages the Rust P2P framework iroh to integrate compute from scattered nodes, exploring a viable path for decentralized LLM inference. This article analyzes its architecture, challenges, and prospects.
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·7 min
GPT-5.6 Full Model Lineup Hands-On Guide: A Deep Dive into API Relay Stations and Their Risks
The full GPT-5.6 model lineup is live. How can domestic developers access it at low cost via API relay stations? This article explains the principles, registration, token setup, client integration, and key risks.
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·7 min
Reverse-Engineering CUDA-checkpoint: The Technical Principles and Practice of Cracking GPU Cold Starts
An in-depth analysis of reverse-engineering Nvidia CUDA-checkpoint to accelerate GPU cold starts. Covers checkpoint/restore, Serverless GPU prospects, and VRAM snapshot challenges.
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·7 min
Why Does WhatsApp Drain So Much Battery? A Deep Dive into the Technical Causes and a Power-Saving Guide
An in-depth analysis of the core technical reasons behind WhatsApp's battery drain—covering persistent connection heartbeats, background tasks, media processing, E2E encryption, and iOS/Android differences—plus 4 practical power-saving tips.
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·4 min
UK Real-Time Railway Map: Technical Insights from an Open Data Visualization Project
A deep dive into the UK real-time railway map project: open data integration, position interpolation, WebSocket push, and WebGL rendering for live transit visualization.
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·3 min
Fix Codex Reconnecting Loop: Switch Network Protocol via Environment Variables
Codex's Reconnecting 5/5 loop is caused by WebSocket being the default protocol. Learn how to set .env environment variables to switch Codex to HTTP/HTTPS and eliminate the wait.
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·6 min
Post-Quantum Cryptography in Python: A Deep Dive into the ML-KEM Key Encapsulation Mechanism
NIST has officially standardized the ML-KEM (CRYSTALS-Kyber) post-quantum algorithm. This article covers ML-KEM principles, Python ecosystem implementation, hybrid deployment strategies, and critical challenges like constant-time execution and memory safety.
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·2 min
AI-Powered Logic Analyzer and Socket Debugging: A Breakthrough in Closed-Loop Embedded Programming
点线面 v4.3.0 enables AI to directly invoke logic analyzers and Socket debugging, closing the hardware-to-network feedback loop for embedded and IoT development.
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