If timed-out, client will automatically change port number and reconnect. Notes on encryption Failure Dectection & Stabilization (Connection Recovery)Ĭonection failures are detected by heartbeats. Defense replay attack with anti-replay window.Protect data integrity by HMAC-SHA1 (or weaker MD5/CRC32).So there wont be any TCP over TCP problem when using OpenVPN. Firewalls will regard FakeTCP as a TCP connection, but its essentially UDP: it supports real-time/out-of-order delivery(just as normal UDP does), no congestion control or re-transmission.

It also simulates a few TCP options such as: MSS, sackOk, TS, TS_ack, wscale. In FakeTCP header mode,udp2raw simulates 3-way handshake while establishing a connection,simulates seq and ack_seq while data transferring. Simulated TCP with Real-time/Out-of-Order Delivery In UDP header mode, it behaves just like a normal UDP tunnel, and you can just make use of the other features (such as encryption, anti-replay, or connection stabilization). In ICMP header mode,udp2raw works like an ICMP tunnel. ICMP/FakeTCP headers help you bypass UDP blocking, UDP QOS or improper UDP NAT behavior on some ISPs.

Features Send/Receive UDP Packets with ICMP/FakeTCP/UDP headers Linux host (including desktop Linux,Android phone/tablet,OpenWRT router,or Raspberry PI) with root account or cap_net_raw capability.įor Windows and MacOS users, use the udp2raw in this repo. Nevertheless,if you used udp2raw + any UDP-based VPN together,you can tunnel any traffic(include TCP/UDP/ICMP),currently OpenVPN/L2TP/ShadowVPN and tinyfecVPN are confirmed to be supported. When used alone,udp2raw tunnels only UDP traffic. GreenTunnel is an anti-censorship utility designed to bypass the DPI system that is put in place by various ISPs to block access to certain websites.A Tunnel which turns UDP Traffic into Encrypted FakeTCP/UDP/ICMP Traffic by using Raw Socket, helps you Bypass UDP FireWalls(or Unstable UDP Environment). Pingtunnel is a tool that send TCP/UDP traffic over ICMP A censorship circumvention tool to evade detection by authoritarian state adversaries Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS A Tunnel which Improves your Network Quality on a High-latency Lossy Link by using Forward Error Correction, possible for All Traffics(TCP/UDP/ICMP) Tunneling over websocket protocol - Static binary available WireGuard VPN installer for Linux servers satellite networks, congested public Wi-Fi, connecting to foreign servers from China) Hysteria is a feature-packed proxy & relay tool optimized for lossy, unstable connections (e.g. When comparing udp2raw and udptunnel you can also consider the following projects:

Udp2raw ipk download