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Algo VPN is a set of Ansible scripts that simplify the setup of a personal IPSEC and Wireguard VPN. It uses the most secure defaults available, works with common cloud providers, and does not require client software on most devices. See our [release announcement](https://blog.trailofbits.com/2016/12/12/meet-algo-the-vpn-that-works/) for more information.
* Installs to DigitalOcean, Amazon Lightsail, Amazon EC2, Vultr, Microsoft Azure, Google Compute Engine, Scaleway, OpenStack, or [your own Ubuntu server](docs/deploy-to-ubuntu.md)
* Does not claim to protect you from the [FSB](https://en.wikipedia.org/wiki/Federal_Security_Service), [MSS](https://en.wikipedia.org/wiki/Ministry_of_State_Security_(China)), [DGSE](https://en.wikipedia.org/wiki/Directorate-General_for_External_Security), or [FSM](https://en.wikipedia.org/wiki/Flying_Spaghetti_Monster)
1.**Setup an account on a cloud hosting provider.** Algo supports [DigitalOcean](https://m.do.co/c/4d7f4ff9cfe4) (most user friendly), [Amazon Lightsail](https://aws.amazon.com/lightsail/), [Amazon EC2](https://aws.amazon.com/), [Vultr](https://www.vultr.com/), [Microsoft Azure](https://azure.microsoft.com/), [Google Compute Engine](https://cloud.google.com/compute/), [Scaleway](https://www.scaleway.com/), and [DreamCompute](https://www.dreamhost.com/cloud/computing/) or other OpenStack-based cloud hosting.
3.**Install Algo's core dependencies.** Open the Terminal. The `python` interpreter you use to deploy Algo must be python2. If you don't know what this means, you're probably fine. `cd` into the `algo-master` directory where you unzipped Algo, then run:
- Linux (rpm-based): See the pre-installation documentation for [RedHat/CentOS 6.x](docs/deploy-from-redhat-centos6.md) or [Fedora](docs/deploy-from-fedora-workstation.md)
5.**List the users to create.** Open `config.cfg` in your favorite text editor. Specify the users you wish to create in the `users` list. If you want to be able to add or delete users later, you **must** select `yes` for the `Do you want to retain the CA key?` prompt during the deployment. Make a unique user for each device you plan to setup.
6.**Start the deployment.** Return to your terminal. In the Algo directory, run `./algo` and follow the instructions. There are several optional features available. None are required for a fully functional VPN server. These optional features are described in greater detail in [deploy-from-ansible.md](docs/deploy-from-ansible.md).
That's it! You will get the message below when the server deployment process completes. You now have an Algo server on the internet. Take note of the p12 (user certificate) password and the CA key in case you need them later, **they will only be displayed this time**.
Certificates and configuration files that users will need are placed in the `configs` directory. Make sure to secure these files since many contain private keys. All files are saved under a subdirectory named with the IP address of your new Algo VPN server.
WireGuard is used to provide VPN services on Apple devices. Algo generates a WireGuard configuration file, `wireguard/<username>.conf`, and a QR code, `wireguard/<username>.png`, for each user defined in `config.cfg`.
On iOS, install the [WireGuard](https://itunes.apple.com/us/app/wireguard/id1441195209?mt=8) app from the iOS App Store. Then, use the WireGuard app to scan the QR code or AirDrop the configuration file to the device.
On macOS Mojave or later, install the [WireGuard](https://itunes.apple.com/us/app/wireguard/id1451685025?mt=12) app from the Mac App Store. WireGuard will appear in the menu bar once you run the app. Click on the WireGuard icon, choose **Import tunnel(s) from file...**, then select the appropriate WireGuard configuration file.
On either iOS or macOS, you can enable "Connect on Demand" and/or exclude certain trusted Wi-Fi networks (such as your home or work) by editing the tunnel configuration in the WireGuard app. (Algo can't do this automatically for you.)
Installing WireGuard is a little more complicated on older version of macOS. See [Using macOS as a Client with WireGuard](docs/client-macos-wireguard.md).
If you prefer to use the built-in IPSEC VPN on Apple devices, or need "Connect on Demand" or excluded Wi-Fi networks automatically configured, then see [Using Apple Devices as a Client with IPSEC](docs/client-apple-ipsec.md).
WireGuard is used to provide VPN services on Android. Install the [WireGuard VPN Client](https://play.google.com/store/apps/details?id=com.wireguard.android). Import the corresponding `wireguard/<name>.conf` file to your device, then setup a new connection with it. See the [Android setup instructions](/docs/client-android.md) for more detailed walkthrough.
WireGuard is used to provide VPN services on Windows. Algo generates a WireGuard configuration file, `wireguard/<username>.conf`, for each user defined in `config.cfg`.
Install the [WireGuard VPN Client](https://www.wireguard.com/install/#windows-7-8-81-10-2012-2016-2019). Import the generated `wireguard/<username>.conf` file to your device, then setup a new connection with it.
Network Manager does not support AES-GCM. In order to support Linux Desktop clients, choose the "compatible" cryptography during the deploy process and use at least Network Manager 1.4.1. See [Issue #263](https://github.com/trailofbits/algo/issues/263) for more information.
Install strongSwan, then copy the included ipsec_user.conf, ipsec_user.secrets, user.crt (user certificate), and user.key (private key) files to your client device. These will require customization based on your exact use case. These files were originally generated with a point-to-point OpenWRT-based VPN in mind.
One common use case is to let your server access your local LAN without going through the VPN. Set up a passthrough connection by adding the following to `/etc/ipsec.conf`:
If you turned on the optional SSH tunneling role, then local user accounts will be created for each user in `config.cfg` and SSH authorized_key files for them will be in the `configs` directory (user.ssh.pem). SSH user accounts do not have shell access, cannot authenticate with a password, and only have limited tunneling options (e.g., `ssh -N` is required). This ensures that SSH users have the least access required to setup a tunnel and can perform no other actions on the Algo server.
Use the example command below to start an SSH tunnel by replacing `user` and `ip` with your own. Once the tunnel is setup, you can configure a browser or other application to use 127.0.0.1:1080 as a SOCKS proxy to route traffic through the Algo server.
Your Algo server is configured for key-only SSH access for administrative purposes. Open the Terminal app, `cd` into the `algo-master` directory where you originally downloaded Algo, and then use the command listed on the success message:
where `user` is either `root` or `ubuntu` as listed on the success message, and `ip` is the IP address of your Algo server. If you find yourself regularly logging into the server then it will be useful to load your Algo ssh key automatically. Add the following snippet to the bottom of `~/.bash_profile` to add it to your shell environment permanently.
> I played around with Algo VPN, a set of scripts that let you set up a VPN in the cloud in very little time, even if you don’t know much about development. I’ve got to say that I was quite impressed with Trail of Bits’ approach.
-- [Romain Dillet](https://twitter.com/romaindillet/status/851037243728965632) for [TechCrunch](https://techcrunch.com/2017/04/09/how-i-made-my-own-vpn-server-in-15-minutes/)
> If you’re uncomfortable shelling out the cash to an anonymous, random VPN provider, this is the best solution.
-- [Thorin Klosowski](https://twitter.com/kingthor) for [Lifehacker](http://lifehacker.com/how-to-set-up-your-own-completely-free-vpn-in-the-cloud-1794302432)
* We accept donations via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=CYZZD39GXUJ3E), [Patreon](https://www.patreon.com/algovpn), and [Flattr](https://flattr.com/submit/auto?fid=kxw60j&url=https%3A%2F%2Fgithub.com%2Ftrailofbits%2Falgo).
* Use our [referral code](https://m.do.co/c/4d7f4ff9cfe4) when you sign up to Digital Ocean for a $10 credit.
* We also accept and appreciate contributions of new code and bugfixes via Github Pull Requests.
Algo is licensed and distributed under the AGPLv3. If you want to distribute a closed-source modification or service based on Algo, then please consider <ahref="mailto:opensource@trailofbits.com">purchasing an exception</a> . As with the methods above, this will help support continued development.
