How do you set up a Raspberry Pi as a VPN server?

Setting up a Raspberry Pi as a VPN server is a great way to access your home network securely from anywhere. One of the most popular ways to do this is by using PiVPN, which supports both WireGuard and OpenVPN. Here's a step-by-step guide using PiVPN with WireGuard (recommended for its speed and simplicity):

 What You’ll Need:

• Raspberry Pi (any model, Pi 3 or newer is recommended)

• Raspberry Pi OS installed and updated

• Static IP or Dynamic DNS set up (for external access)

• Router with port forwarding capability

• Administrative (sudo) access

 Step-by-Step Setup Guide:

1. Update Your Pi

2. Install PiVPN

This will launch a guided installer. Follow these steps:

• Choose WireGuard (faster and more modern than OpenVPN)

• Set a static IP (or choose one from your network)

• Select the user (typically pi)

• Let PiVPN automatically configure your firewall (UFW)

• Open port 51820/UDP on your router for WireGuard

3. Set Up a VPN Profile

After installation:

• Enter a name for the client (e.g., myphone)

• A .conf file will be created in /home/pi/configs

4. Transfer Configuration File to Your Device

Copy the .conf file to your phone or computer:

• Use scp, sftp, or a USB stick

• Or use QR code (for mobile):

  bash

   

  pivpn -qr

5. Install WireGuard App

On your mobile/PC, install the WireGuard app and import the configuration file (or scan the QR code).

6. Port Forwarding on Your Router

• Log into your router's admin panel

• Forward UDP port 51820 to your Pi's local IP address

7. (Optional) Use Dynamic DNS

If you don’t have a static IP, use Dynamic DNS:

• Register with a service like No-IP, DuckDNS

• Install the DDNS updater on your Pi

 Done!

Now you can connect securely to your home network from anywhere using WireGuard.

 Tips for Security:

• Keep your Pi and packages up to date

• Use strong passwords or SSH keys

• Disable unused services

• Backup your VPN keys