One thing to consider, though, is DNS encryption. If you want to learn more about this subject, then please check out our Ultimate Guide to VPN Encryption. If you prefer or need to maintain compatibility with pre-OpenVPN 2.4 clients, then you can opt to use RSA instead of ECDSA. As a point of reference, ECDSA-256 is considered just as secure as RSA-384. ECHD also provides perfect forward secrecy.ĮCDH uses the ECDSA signature algorithm and is user-selectable from 256-bits to 512-bits. But out-of-the-box, your PiVPN will use the following OpenVPN settings:ĭata channel: an AES-256-CBC cipher with HMAC SHA256 authentication.Ĭontrol channel: an AES-256- ETR cipher with ECDH handshake encryption and HMAC SHA256 authentication. Technical securityĪll the open-source scripts used to set up a PiVPN are highly configurable. PiVPN is really just a collection of community-developed scripts for deploying open-source software. Under such a setup, you install and control the PiVPN via, although you will temporarily need to connect a screen and keyboard in order to enable SSH.Ĭheck out our how to SSH into a rapberry Pi Guide to find out more information. It is “strongly recommend” to use Raspbian Lite (“Buster” at the time of writing) so that the Pi can act as a headless VPN server without the need to attach a screen, keyboard, and mouse. We used an old Pi 2 model B, but given its low price point, we recommend buying the latest model of Raspberry Pi for best OpenVPN performance. PiVPN should run well any on Raspberry Pi. These are the minimum requirements, but you can add more if you choose. It has been designed specifically to run on a low-cost Raspberry Pi, although it should (in theory) work on most Debian setups.Ī base Raspberry Pi costs $35 USD, to which you will also need to add an SD card to install the OS onto, and either a WiFi dongle or ethernet cable to provide an internet connection. PiVPN is a free and open-source software suite that sets up a VPN server using OpenVPN server software.
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