Docker(strongSwan + MySQL + bitcoin + Spring Boot)
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README.md

BitStreamVPN

This is an IKEv2/IPsec VPN service uses that certificate-based authentication.

Motivation: I wanted to learn Spring Boot and Docker. Also, it is no fun trying to choose a VPN service (https://arstechnica.com/information-technology/2016/06/aiming-for-anonymity-ars-assesses-the-state-of-vpns-in-2016/). I'm not aware of any VPN providers that offer certificate-based authentication for IKEv2/IPsec.

Architecture

There are five Docker containers:

  • bitcoin
    • There are shell scripts that are triggered on blocknotify and walletnotify. These make calls to the webapp's updatePayment and updateConfirmations actions.
  • db
    • There are two MySQL databases in this container - one that is primarily used by strongSwan, and the other that is primarily used by the webapp.
  • strongswan
    • strongSwan uses the MySQL plugin for its configuration. There is no ipsec.conf or swanctl.conf.
    • There are iptables that are inserted when a client brings up the connection.
      • An iptables -t nat rule is inserted so that traffic is forwarded through
      • Two iptables -t mangle rules are inserted, these are used to get the bandwidth counts.
    • A cron job is used to make calls to write the new bandwidth data to the database; and to clean up any connections
  • webapp
    • This is a Spring Boot app which serves as the front-end. Thymeleaf is used for templating, and Gradle is used for building. Bootstrap is used for the UI.
    • The webapp has the Subscription and Payment logic, and is also responsible for issuing certificates based on the user's CSR.
  • modsecurity

Requirements

You will need Java, Gradle, and Docker installed.

Set up keystore

sudo apt-get install strongswan (need this for ipsec pki. will move commands to use openssl later)

cd ipsec-pki ; bash -x buildKeystore.sh

Build webapp

./gradlew build buildDocker

Run (this will build the other images)

  • docker-compose up -d

Make Payment (this uses the regtest network)

Connect bitcoin wallet

bitcoin-qt -datadir=/home/ram/bob-datadir -port=19444 -rpcport=19332 -rpcuser=bob -rpcpassword=bobpass -connect=172.20.0.1:18333 -regtest -server -listen -debug

Generate block

bitcoin-cli -regtest -rpcport=19332 -rpcuser=bob -rpcpassword=bobpass generate 1