https://sudonull.com/go-tun-udp-relay-yaml-config-and-code
Implement a network relay on Go with TUN/TAP and UDP tunnels. YAML config, protocol with MD5+timestamp, iperf3 benchmarks 925 Mbit/s. Code and examples for middle/senior dev.
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https://sudonull.com/bypassing-telegram-blocking-technical-methods-for-it
How DPI systems work and which methods to bypass Telegram blocking remain resilient: proxies, CDN, stealth tunnels. Practical guide for developers.
https://sudonull.com/docker-on-vps-24-containers-in-production
How to deploy 24 containers on VPS with 6 GB RAM. Architecture, Elasticsearch optimization, SSH tunnels, monitoring without Prometheus. For DevOps and middle/senior engineers.
https://sudonull.com/icmp-tunnel-in-the-linux-kernel-tcp-udp-encapsulation
How to implement an ICMP tunnel in the Linux kernel for TCP/UDP traffic encapsulation. Code analysis, Netfilter hooks and working with sk_buff. Useful for middle/senior developers.
https://sudonull.com/vless-vulnerability-bypassing-split-tunneling-in-clients
Critical hole in VLESS clients (xray/sing-box) allows spyware to bypass VpnService and leak IP. Tested 8 clients, Happ dumps configs. Protection measures and recommendations for developers. Study the risks.
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