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forticlient

Connect to a FortiNet VPNs through docker

Usage

The container uses the forticlientsslvpn_cli linux binary to manage ppp interface

This allows you to forward requests through the docker container as proxy on the VPN network.

Windows

This should work with docker on windows, however with Windows 10 I see an issue with opening the vpn tunnel.

Linux

# Start the priviledged docker container with a static ip
docker run -it --rm \
  --privileged \
  -p 3389:3389 \
  -p 3390:3390 \
  -e VPNADDR=host:port \
  -e VPNUSER=me@domain \
  -e VPNPASS=secret \
  -e DESTINATIONS="3089:192.168.1.2:3389|3090:192.168.1.3:3389" \
  -e Reconnect=true
  ghcr.io/jamescoverdale/forticlient-forwarder:latest
  

Destinations is a pipe | delimited string of destinations you want to forward to. This is then further colon : delimited to define the local port, host ip and host port. Definition of a Local Port allows you to forward to multiple hosts that use the same port as seen in the example (or even http/https hosts)

LocalPort1:HostIP1:HostPort1|localPort2:HostIP2:HostPort2

The above example would forward requests:

DockerIP:3389 to 192.168.1.2:3389

DockerIP:3390 to 192.168.1.3:3389

This would allow you to RDP two different machines on the VPN network from your host machine, you can add as many destinations as you require.

Misc

If you don't want to use a docker network, you can find out the container ip once it is started with:

# Find out the container IP
docker inspect --format '{{ .NetworkSettings.IPAddress }}' <container>

Precompiled binaries

Thanks to https://hadler.me for hosting up to date precompiled binaries which are used in this Dockerfile.

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Connect to a FortiGate VPN through docker

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