Port Forwarding for Docker
Simple docker image to forward ports using socat.
Based on https://hub.docker.com/r/marcnuri/port-forward
Usage
Define the following environment variables to configure port-forwarding.
| Variable | Description | Optional |
|---|---|---|
| REMOTE_HOST | IP or address of the host you want to forward traffic to | no |
| REMOTE_PORT | Port on remote host to forward traffic to | yes (80) |
| LOCAL_PORT | Port where container listens | yes (80) |
The socat process within the container will listen by default to port 80, use -pdocker
flag to map the port of the local machine where it will listen to traffic to be forwarded.
docker run -e REMOTE_HOST=<remote_host> -e REMOTE_PORT=<remote_port> -e LOCAL_PORT=<local_port> -p <exposed_local_port>:<local_port> cheyne/port-forward
Examples
The following commands will all forward 8080 traffic to a remote machine located at example.com in the http port
docker run -e REMOTE_HOST=example.com -e REMOTE_PORT=80 -e LOCAL_PORT=80 -p 8080:80 cheyne/port-forward
docker run -e REMOTE_HOST=example.com -e REMOTE_PORT=80 -p 8080:80 cheyne/port-forward
docker run -e REMOTE_HOST=example.com -p 8080:80 cheyne/port-forward
Docker hub
Docker image hosted at Docker Hub: https://hub.docker.com/repository/docker/cheyne/port-forward