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docker-meraki-vpn-client

License

A tiny Alpine based docker image to quickly setup a Meraki VPN client w/ PSK.

Motivation

Does your office or a client have a VPN server already setup and you just need to connect to it? Do you use Linux and are jealous that the one thing a MAC can do better is quickly setup this kind of VPN? Then here is all you need:

  1. VPN Server Address
  2. Pre Shared Key
  3. Username
  4. Password

Run

Create docker-compose.yml

version: '2'
services:
  meraki-vpn-client:
    image: nicolabeghin/docker-meraki-vpn-client
    env_file: secrets.env
    privileged: true
    container_name: meraki-vpn-client
    hostname: meraki-vpn-client
    volumes:
      - /lib/modules:/lib/modules:ro

Setup credentials in secrets.env

VPN_SERVER_IPV4=x.x.x.x
VPN_PSK=meraki
VPN_USERNAME=myuser@myhost.com
VPN_PASSWORD=mypass

Now run it:

docker-compose up

Route

From the host machine configure traffic to route through VPN link:

# confirm the ppp0 link and get the peer e.g. (192.0.2.1) IPV4 address
ip a show ppp0
# route traffic for a specific target ip through VPN tunnel address
sudo ip route add 1.2.3.4 via 192.0.2.1 dev ppp0
# route all traffice through VPN tunnel address
sudo ip route add default via 192.0.2.1 dev ppp0
# or
sudo route add -net default gw 192.0.2.1 dev ppp0
# and delete old default routes e.g.
sudo route del -net default gw 10.0.1.1 dev eth0
# when your done add your normal routes and delete the VPN routes
# or just `docker stop` and you'll probably be okay

Test

You can see if your IP address changes after adding appropriate routes e.g.:

curl icanhazip.com

References