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Pi-hole with PiVPN (WireGuard) on AWS

Table of Contents

Create a VPS

Step 1: Create a free Ubuntu server in AWS

  • Create an AWS account.
  • Go to EC2, click "Launch Instance", select "free tier" and choose Ubuntu.
  • Manually configure, and click through each step until you get to Security groups, and add the following:
    • Custom UDP
    • Port Range: 51820
    • Source: 0.0.0.0/0
    • Description: WireGuard
  • Download your new keypair (e.g. PiVPNHOLE.pem) and save it to ~/.ssh.
  • In your EC2 terminal, note your "PublicDNS (IPv4)," it'll look like: ec2-###.location.com. I call this [your host] below.
  • Click "Elastic IP" to create an Elastic IP, then click "actions" and "associate", and associate the Elastic IP to your new server.

Note: If you are planning to use this as a VPN (no split-tunneling), use LightSail. AWS has a £0.12 / gb cost on outbound transfers. This means that if you use 1tb / month, you'll spend £120. If you use Lightsail, the £3.50 tier gets you 1tb / month which saves you £116.50.

Optional

One way to avoid filling up your Pi-hole logs with queries to your VPS' "Private DNS", e.g. [hostname].[region].compute.internal, is to disable systemd-resolved.

Disable systemd-resolved.

sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved

Delete the symlink /etc/resolv.conf.

sudo rm /etc/resolv.conf

Recreate /etc/resolv.conf.

sudo vim /etc/resolv.conf

Add a nameserver which the VPS will use for resolving network requests (such as updating the Pi-hole blocklists or packages).

nameserver 9.9.9.9 # Quad9

Add the hostname (found in /etc/hostname) to /etc/hosts (e.g. sudo vim /etc/hosts):

127.0.0.1 localhost [hostname]

Install Pi-hole

Step 2: Connect to VPS

ssh -i /Users/[your user]/.ssh/PiVPNHOLE.pem ubuntu@[your host]

Step 3: Install Pi-hole

curl -sSL https://install.pi-hole.net | bash

  • Take note of your Pi-hole's web interface IP and the password

Install and Setup PiVPN

Step 4: Install PiVPN

curl -L https://install.pivpn.io | bash

Step 5: Create Profiles

pivpn add -n [profile-name]

Step 6: Setup Split-Tunneling

sudo vim /etc/wireguard/configs/[profile].conf

  • Change AllowedIPs from "0.0.0.0/0, ::0" to "[Pi-hole IP address]/32, [DNS IP]/32".
    • The [DNS IP] is listed under Interface and by default is 10.6.0.1/32.
    • [Pi-hole IP address]/32 allows access to the Pi-hole web interface and [DNS IP]/32 allows DNS requests .

Step 7: Display QR code to Transfer Profile to Mobile

pivpn -qr [profile-name]

Step 8: Transfer Profiles from VPS to Local

scp -i ~/.ssh/PiVPNHOLE.pem ubuntu@[your host]:/etc/wireguard/configs/[profile-name.conf] ~/etc/wireguard/

Optional: Setup Encrypted DNS

Setup encrypted DNS with several options:

Troubleshooting

  • Before being able to remotely log in, I had to run the command chmod 600 ~/.ssh/PiVPNHOLE.pem.
  • After clicking "generate keys" in PiVPN, you may get /tmp/setupVars.conf permission denied. I solved this by deleting that file.
  • You may need to run the PiVPN script as sudo. Run with curl -L https://install.pivpn.io | sudo bash.