OpenConnect in a Docker Container

Run OpenConnect VPN inside a Docker container. To make connections more manageable, an SSH layer is added on top.

How to Run

1. Build the Docker Image

To build the Docker image, use the following command:

docker build -t openconnect_box .

2. Run the Docker Container

Start the Docker container using the following command:

docker run -it --rm \
    -e VPN_SERVER="SERVER_ADDRESS" \
    -e VPN_USERNAME="USERNAME" \
    -e VPN_PASSWORD_BASE64="MY_PASSWORD_IN_BASE64" \
    --cap-add NET_ADMIN --sysctl net.ipv6.conf.all.disable_ipv6=0 \
    -v ~/.ssh/authorized_keys:/root/.ssh/authorized_keys \
    -p 2222:22 \
    openconnect_box

Generating Base64 Encoded Password

If you need to generate a base64 encoded string from your password, you can use the following command:

echo -n "YOUR_PASSWORD" | base64

Replace YOUR_PASSWORD with your actual password.

Note:

Replace SERVER_ADDRESS, USERNAME, and MY_PASSWORD_IN_BASE64 with your respective VPN credentials.
The above command also mounts your ~/.ssh/authorized_keys to the container's /root/.ssh/authorized_keys directory. Ensure you have the authorized_keys file in place if you wish to use SSH.
The container exposes the SSH port on 2222 of the host machine.

Disclaimer

All content in this repo was generated using GPT-4 prompting!

taesiri / OpenConnectInDocker