vpnc

• Ubuntu 16.04 base image
• Cisco-compatible VPN client
• net.ipv4.ip_forward
• iptables w/ rules for masquerading

Environment Variables

• VPNC_GATEWAY: IP/name of your IPSec gateway
• VPNC_ID: Group name
• VPNC_AUTHMODE: IKE authentication mode (hybrid, psk)
• VPNC_SECRET: Group password
• VPNC_USERNAME: XAUTH username
• VPNC_PASSWORD: XAUTH password

Example config

You can find an example configuration in the docker-compose.yml included. In order for this to work, the container needs its own IP address. Create a network called public like this:

docker network create -d macvlan \
  --subnet=192.168.1.0/24 \
  --gateway=192.168.1.1  \
  --ip-range=192.168.1.2/32 \
  -o parent=eth0 public

Now you can assign an IP to your container:

version: '2'
services:
  app:
    image: janwer/vpnc-relay
    restart: always
    env_file:
     - vpnc-credentials.env
    cap_add:
     - NET_ADMIN
    networks:
      public:
        ipv4_address: 192.168.1.2

networks:
   public:
    external: true