Autovpn : Create On Demand Disposable OpenVPN Endpoints On AWS

AutoVPN is a script that allows the easy creation of OpenVPN endpoints in any AWS region. To create a VPN endpoint is done with a single command takes ~3 minutes. It will create the proper security groups.

It spins up a tagged ec2 instance and configures OpenVPN software. Once instance is configured an OpenVPN configuration file is downloaded and ready to use.

There is also functionality to see which instances are running in which region and ability to terminate the instance when done. Additional functionality includes specifying instance type, generate ssh keypairs, specify custom ami, change login user and more to come.

Use Case

Create on demand OpenVPN Endpoints in AWS that can easily be destroyed after done only pay for what you use.

Dependencies

Create a virtualenv:

mkvirtualenv -p python3 env/
source env/bin/activate

Install dependencies by running

pip install -r requirements.txt

Ensure that you have an AWS .credentials file by running:

vi ~/.aws/credentials

Then type in the following and add your keys (remove parenthesis):

[default]
aws_access_key_id = (your_access_key_here)
aws_secret_access_key = (your_secret_key_here)

Install OpenVPN client (if needed)

Installation

Ensure dependencies are all installed.
Clone repo to system.

git clone https://github.com/ttlequals0/autovpn.git

To create SSH keypair execute autovpn with -G and -r options for AWS region of choice. (optional) NOTE: Make sure to add new key to your ssh-agent.

./autovpn -G -r us-east-1

Execute autovpn with -C -k and -r options to deploy to AWS:

./autovpn -C -r us-east-1 -k us-east-1_vpnkey

OpenVPN config files are downloaded to current working directory.
Import the OpenVPN config file and connect:

sudo openvpn us-east-1_aws_vpn.ovpn

Main Page

DESCRIPTION:
autovpn – On Demand AWS OpenVPN Endpoint Deployment Tool.
Project found at https://github.com/ttlequals0/autovpn

USAGE:
ACTION [OPTIONS]
-C Create VPN endpoint.
-D Delete keypair from region.
-G Generate new keypair.
-S Get all running instances in a given region.
-T Terminate a OpenVPN endpoint.
-d Specify custom DNS server. (ex. 4.2.2.1)
-h Displays this message.
-i AWS Instance type (Optional, Default is t2.micro)
t2.nano t2.micro t2.small t2.medium t2.large.**
-k Specify the name of AWS keypair (Required)
-m Allow multiple connections to same endpoint.
-r Specify AWS Region (Required)
us-east-1 us-west-1 us-east-2 us-west-2 eu-west-1 eu-west-2
eu-west-3 eu-central-1 eu-north-1 ap-southeast-1 ap-northeast-1
ap-northeast-2 ap-northeast-3 ap-southeast-2 sa-east-1
ap-east-1 ca-central-1 me-south-1
-p Specify custom OpenVPN UDP port
-u Specify custom ssh user.***
-y Skip confirmations
-z Specify instance id.

EXAMPLES:
Create OpenVPN endpoint:
autovpn -C -r us-east-1 -k us-east-1_vpnkey
Generate keypair in a region.
autovpn -G -r us-east-1
Get running instances
autovpn -S -r us-east-1
Terminate OpenVPN endpoint
autovpn -T -r us-east-1 -z i-b933e00c
Using custom options
autovpn -C -r us-east-1 -k us-east-1_vpnkey -a ami-fce3c696 -u ec2_user -i m3.medium

NOTES:
* – Custom AMI may be needed if changing instance type.
** – Any instance size can be given but the t2.micro is more than enough.
*** – Custom user might be need if using a custom ami.
**** – AWS IAM user must have EC2 or Administrator permissions set.