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Dockerized client for Checkpoint VPN using snx client.

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Introduction

The Linux client for Checkpoint VPN, snx, is a i386 executable; this container wraps it so that it is not necessary to use a muliarch distro.

This container should be run with --net=host --privileged in order for it to have the required rights to set up the tunnel and change your routing table.

WARNING: This container does nothing to secure snx which needs to run SETUID. Moreover it requires you to store your password in clear in a file. Use at your own risk.

Usage

Pick a folder in which to store your config files and create one using the syntax of expect scripts

export configs=/etc/snx

mkdir $configs

cat >  $configs/myconfig.exp << EOF
set servername my.server.address
set username myuser
set password mypassword\[with\}escaped\*specialCharacters
# optional the build number of snx to use: not all version will work with a
# given server. Possbilities currently are 800008209 (default) and 800007075 
set build_number 800008209
EOF

Build the container

docker build -t snx --network host .

First start

docker run \
	--name a_friendly_name \
	--detach \
	-v $configs:/etc/snx/ \
	-v /lib/modules:/lib/modules:ro \
	--net=host \
	--privileged \
	snx \
	myconfig.exp

Then

docker start/stop a_friendly_name

Beware, apparently no two instances can run simultaneously: snx refuses to change the routing table in the second instance.

Known working configurations

Università degli studi di Roma "La Sapienza"

set servername 151.100.70.14
set username [email protected]
set password supersecret
set build_number 800008209

Università degli Studi dell'Aquila -- new firewall

set servername vpn.univaq.it
set username firlas
set password supersecret
set build_number 800010003

Università degli Studi dell'Aquila -- old firewall

set servername prena.univaq.it
set username firlas
set password supersecret
set build_number 800007075

Credits

This container was inspired by https://github.com/Kedu-SCCL/docker-snx-checkpoint-vpn

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Dockerized client for Checkpoint VPN using snx client.

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