tnnlink

Simple HTTP tunneling using SSH, authorized using github public keys.

Self-hosted ngrok alternative.

Visit tnnl.ink to see it in action.

Connecting

ssh <github-username>@localhost -p 2222 -R 80:localhost:<local-port>

Planned features (no order)

• TCP tunnel
• Custom sub-domain

Dependencies

• github.com/pelletier/go-toml

Usage

1. Install Go
2. Get the code

go get github.com/liljebergxyz/tnnlink

3. Compile & Install

go install github.com/liljebergxyz/tnnlink

4. Generate a passwordless host key

ssh-keygen -t rsa -b 4096 -f host_rsa

5. Create a config file

[http]
addr = ":8080"
sslAddr = ":4433"
mainDomain = ".localtest.me/"
ssl = false
cert = "./cert.pem"
key = "./key.pem"

[ssh]
addr = ":2222"
key = "./host_rsa"
whitelist = ""

6. Launch

tnnlink --config="./config.toml"

Explanation of whitelist

The whitelist config entry is a comma-seperated list of github usernames

Notes

1. This software has not been audited in anyway and was a fun weekend project I intend to continue supporting, but it is my first time writing a full application in Go for actual every-day use.
2. SSL is not activated by default and you are expected to generate a letsencrypt wildcard certificate in order to utilize it