icmptunnel - Transparently tunnel your IP traffic through ICMP echo and reply packets.

•    C

Transparently tunnel your IP traffic through ICMP echo and reply packets.'icmptunnel' works by encapsulating your IP traffic in ICMP echo packets and sending them to your own proxy server. The proxy server decapsulates the packet and forwards the IP traffic. The incoming IP packets which are destined for the client are again encapsulated in ICMP reply packets and sent back to the client. The IP traffic is sent in the 'data' field of ICMP packets.

chisel - A fast TCP tunnel over HTTP

•    Go

Chisel is a fast TCP tunnel, transported over HTTP, secured via SSH. Single executable including both client and server. Written in Go (Golang). Chisel is mainly useful for passing through firewalls, though it can also be used to provide a secure endpoint into your network. Chisel is very similar to crowbar though achieves much higher performance.

facebook-tunnel - Tunneling Internet traffic over Facebook chat.

•    Roff

The idea of this project is to tunnel Internet traffic through Facebook chat (packets are sent as base64), the main component is tuntap and also the Google's Gumbo parser which does the interaction with Facebook (login, send/receive messages, etc.). I'm from Paraguay, South America. Our country was chosen for the Internet.org campaign: "free Internet access in developing countries". TIGO, one of the biggest telcos here, negotiated a deal so you can have free Facebook access through them. We all know that the Internet is about accessing many places, etc. So I feel this campaign has a serious limitation.

go-http-tunnel - Fast and secure tunnels over HTTP/2

•    Go

Go HTTP tunnel is a reverse tunnel based on HTTP/2. It enables you to share your localhost when you don't have a public IP. Build the latest version.

gost - GO Simple Tunnel - a simple tunnel written in golang

•    Go

GO Simple Tunnel - a simple tunnel written in golang

mole - cli app to create ssh tunnels

•    Go

Mole is a cli application to create ssh tunnels, forwarding a local port to a remote endpoint through an ssh server. The project provides a small automated infrastructure to help on funcional tests. Please refer to this document for more details about it.

lanproxy - lanproxy是一个将局域网个人电脑、服务器代理到公网的内网穿透工具，目前仅支持tcp流量转发，可支持任何tcp上层协议（访问内网网站、本地支付接口调试、ssh访问、远程桌面

•    Java

lanproxy是一个将局域网个人电脑、服务器代理到公网的内网穿透工具，目前仅支持tcp流量转发，可支持任何tcp上层协议（访问内网网站、本地支付接口调试、ssh访问、远程桌面...）。目前市面上提供类似服务的有花生壳、TeamView、GoToMyCloud等等，但要使用第三方的公网服务器就必须为第三方付费，并且这些服务都有各种各样的限制，此外，由于数据包会流经第三方，因此对数据安全也是一大隐患。

subnet - Simple, auditable & elegant VPN, built with TLS mutual authentication and TUN.

•    Go

Simple VPN server/client for the rest of us. subnet establishes a TLS connection to the server. A TUN interface is created, and setup with the given network parameters (local IP, subnet). All traffic that matches the localIP + subnet gets routed to the VPN server.

udp2raw-tunnel - A Tunnel which Turns UDP Traffic into Encrypted UDP/FakeTCP/ICMP Traffic by using Raw Socket,helps you Bypass UDP FireWalls(or Unstable UDP Environment)

•    C++

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). It can defend Replay-Attack and supports Multiplexing. It also acts as a Connection Stabilizer. When used alone,udp2raw tunnels only UDP traffic. 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.

UDPspeeder - A Tunnel which Improves your Network Quality on a High-latency Lossy Link by using Forward Error Correction,for All Traffics(TCP/UDP/ICMP)

•    C++

A Tunnel which Improves your Network Quality on a High-latency Lossy Link by using Forward Error Correction. Assume your local network to your server is lossy. Just establish a VPN connection to your server with UDPspeeder + any UDP-based VPN, access your server via this VPN connection, then your connection quality will be significantly improved. With well-tuned parameters , you can easily reduce IP or UDP/ICMP packet-loss-rate to less than 0.01% . Besides reducing packet-loss-rate, UDPspeeder can also significantly improve your TCP latency and TCP single-thread download speed.

Localtunnel - Expose yourself to the world

•    Javascript

Localtunnel exposes your localhost to the world for easy testing and sharing! No need to mess with DNS or deploy just to have others test out your changes.Great for working with browser testing tools like browserling or external api callback services like twilio which require a public url for callbacks.

ngrok - Expose your localhost to the web. Node wrapper for ngrok.

•    Javascript

Then use ngrok.connect() to start ngrok and open a tunnel. This module uses node>=10.19.0 with async/await. For a callback-based version use 2.3.0.

Wireguard - Fast, Modern, Secure, VPN Tunnel

•    C

WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general purpose VPN for running on embedded interfaces and super computers alike, fit for many different circumstances.

ngrok - Introspected tunnels to localhost

•    Go

ngrok is a reverse proxy that creates a secure tunnel between from a public endpoint to a locally running web service. ngrok captures and analyzes all traffic over the tunnel for later inspection and replay. You can give this URL to anyone to allow them to try out a web site you're developing without doing any deployment.

frp - A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet

•    Go

frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet. Now, it supports tcp, udp, http and https protocol when requests can be forwarded by domains to backward web services. Expose any http and https service behind a NAT or firewall to the internet by a server with public IP address(Name-based Virtual Host Support). Expose any tcp or udp service behind a NAT or firewall to the internet by a server with public IP address.

Telepresence - Local development against a remote Kubernetes or OpenShift cluster

•    Python

Telepresence substitutes a two-way network proxy for your normal pod running in the Kubernetes cluster. This pod proxies data from your Kubernetes environment (e.g., TCP connections, environment variables, volumes) to the local process. The local process has its networking transparently overridden so that DNS calls and TCP connections are routed through the proxy to the remote Kubernetes cluster.

mr2 - Expose local server to external network

•    Go

Mr.2 can help you expose local server to external network. Support both TCP/UDP, of course support HTTP. Keep it simple, stupid. See releases for other platforms. Or go get github.com/txthinking/mr2/cli/mr2.

tcp-over-websockets - Tunnel TCP through WebSockets.

•    Javascript

Tunnel TCP through WebSockets. Access anything you want, even from a crappy WiFi which only allows HTTPS. Note: chisel is probably the same thing but better. @mdslab/wstun is similar.

awesome-anti-censorship - curated list of open-source anti-censorship tools

A curated list of open source tools and readings for fighting Internet censorship. Inspired by the awesome list.

Pagekite - Fast, Reliable Localhost Tunneling Solution

•    Python

PageKite is a reverse proxy tool that connects local servers to the public Internet. It gives proper domain names to servers running on localhost and makes them visible to the world, bypassing NAT and firewalls.