VPN via Redsocks

circleci-tunnel.sh

#!/usr/bin/env bash

set -xe

SSH_USER_PWD="${SSH_USER_PWD}"
SSH_USER="${SSH_USER}"
VPN_GATEWAY="${VPN_GATEWAY}"

sshpass -p "${SSH_USER_PWD}" ssh -o StrictHostKeyChecking=no -v "${SSH_USER}@${VPN_GATEWAY}" -22 -D 9999 -nf "sleep 90000" &
echo 'base{log_debug = on; log_info = on; log = "file:/tmp/reddi.log";daemon = on; redirector = iptables;}redsocks { local_ip = 127.0.0.1; local_port = 12345; ip = 127.0.0.1;port = 9999; type = socks5; }' > ~/redsocks.conf
sudo redsocks -c ~/redsocks.conf &
sudo iptables -t nat -N REDSOCKS
sudo iptables -t nat -A REDSOCKS -p tcp -d 10.0.0.0/8 -j DNAT --to 127.0.0.1:12345
sudo iptables -t nat -A OUTPUT -d 10.0.0.0/8 -j REDSOCKS
sudo iptables -t nat -I PREROUTING 1 -d 10.0.0.0/8 -j REDSOCKS

install.sh

#!/bin/bash -x

set -e

sudo locale-gen UTF-8
sudo apt-get install redsocks sshpass -y
sudo apt-get autoremove

wget -O ~/circleci-tunnel.sh https://gist.github.com/davidlukac/d980c1fcb7584ffbfc53f4780efe3fcd/raw/951a892aeac86acfb012ff05209314e9342961b8/circleci-tunnel.sh
chmod +x ~/circleci-tunnel.sh