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Load Balancers & Proxy Tunnel & Remote Access

 About Otunnel

peer-to-peer tunnel tool

Platforms

Web Self-hosted

Languages

Go

Links

Source Code

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ooclab
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Otunnel

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otunnel

简体中文 | English

把两台机器的内网端口，像插网线一样直接互通。

otunnel 是一个单文件、低认知成本的双向安全隧道工具。你可以用同一个命令行，快速完成这些事：

  • 临时把本地 SSH/HTTP 暴露给公网团队协作。
  • 在本地直接访问远程内网服务做排障和调试。
  • 一次连接同时建立多条隧道，组合复杂拓扑。

为什么上手快：

  • 一个二进制。
  • 一个命令行。
  • listen（服务端）和 connect（客户端）同一套语义。

快速开始

  1. 从 GitHub Releases 下载对应平台二进制。
  2. 在公网服务器启动 otunnel 服务端。
  3. 在本地机器启动 otunnel 客户端并建立隧道。

安装（Linux amd64 示例）

curl -fL -o otunnel.tar.gz \
  https://github.com/ooclab/otunnel/releases/download/v1.4.0/otunnel_linux_amd64.tar.gz
tar -xzf otunnel.tar.gz
chmod +x otunnel
sudo mv otunnel /usr/local/bin/otunnel

30 秒上手

服务端（公网机器）:

otunnel listen :10000 -d -s abc123

客户端（本地机器）:

otunnel connect SERVER_IP:10000 -d -s abc123 -t 'r:127.0.0.1:22::50022'

随后即可通过公网服务器 SERVER_IP:50022 访问本地 SSH。

常见映射玩法

场景 命令示例 结果
本地服务暴露到公网（反向） otunnel connect SERVER_IP:10000 -d -s abc123 -t 'r:127.0.0.1:22::50022' 外部访问 SERVER_IP:50022 即到本地 22
远端服务映射到本地（正向） otunnel connect SERVER_IP:10000 -d -s abc123 -t 'f:tcp:127.0.0.1:18080:127.0.0.1:8080' 本地访问 127.0.0.1:18080 即到远端 8080
一次连接，多条隧道 otunnel connect SERVER_IP:10000 -d -s abc123 -t 'r:127.0.0.1:22::50022' -t 'f:tcp:127.0.0.1:18080:127.0.0.1:8080' 同时启用反向和正向映射

可读性版（多行写法）：

otunnel connect SERVER_IP:10000 -d -s abc123 \
  -t 'r:127.0.0.1:22::50022' \
  -t 'f:tcp:127.0.0.1:18080:127.0.0.1:8080'

下载

Release 页面:

资源下载链接格式:

https://github.com/ooclab/otunnel/releases/download/<version>/otunnel_<os>_<arch>.tar.gz

示例:

从源码构建

git clone https://github.com/ooclab/otunnel.git
cd otunnel
go mod tidy
make

一次构建全部支持平台二进制:

make build-all

CI

GitHub Actions workflow 位于 .github/workflows/ci.yml。 Push/PR 时会执行 go mod tidy、go mod vendor、go build ./... 和 go test ./...。

Systemd

安装到系统路径:

install -m 755 ./otunnel /usr/local/bin/otunnel

服务端配置 /etc/systemd/system/otunnel-listen.service:

[Unit]
Description=Otunnel Listen Service
After=network.target

[Service]
Type=simple
Restart=on-failure
ExecStart=/usr/local/bin/otunnel listen :20000 -d -s THE_SECRET

[Install]
WantedBy=multi-user.target

客户端配置 /etc/systemd/system/otunnel-connect.service:

[Unit]
Description=Otunnel Connect Service
After=network.target

[Service]
Type=simple
Restart=on-failure
ExecStart=/usr/local/bin/otunnel connect YOUR_SERVER_IP:20000 -d -s THE_SECRET -t "r:127.0.0.1:22::50022"

[Install]
WantedBy=multi-user.target

Docker

服务端:

docker run --rm -it --net=host ooclab/otunnel-amd64 /otunnel listen :10000 -d -s abc123

客户端:

docker run --rm -it --net=host ooclab/otunnel-amd64 /otunnel connect SERVER_IP:10000 -d -s abc123 -t 'f:127.0.0.1:10022:HOST_IP:HOST_PORT'

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