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WireGuard VPN Management Functions

WireGuard Logo

Overview

This module provides PowerShell functions to manage a WireGuard VPN server running in a Docker container. WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It's designed to be faster, simpler, leaner, and more useful than IPsec while avoiding the massive headache.

Quick Start

# Ensure the WireGuard server is running
EnsureWireGuard

# Add a new peer (client)
Add-WireGuardPeer -PeerName "MyPhone"

# Show QR code for a peer (for mobile device setup)
Get-WireGuardPeerQRCode -PeerNumber 1

# List all configured peers
Get-WireGuardPeers

# Remove a peer by name
Remove-WireGuardPeer -PeerName "MyPhone"

Prerequisites

  • Docker Desktop installed and running
  • PowerShell 5.1 or later (PowerShell Core is also supported)
  • Network port 51839/UDP available and forwarded (if used behind NAT)
  • WireGuard client app installed on devices you want to connect

WireGuard vs Traditional VPNs

WireGuard offers several advantages over traditional VPNs:

  • Simple: The codebase is minimal (~4,000 lines vs. 400,000+ for OpenVPN)
  • Fast: Significantly faster than OpenVPN and IPsec
  • Secure: Uses modern cryptography protocols by default
  • Lightweight: Minimal CPU usage and battery impact on mobile devices
  • Stable: Connection remains stable during network changes or sleep

Available Functions

Function Description
EnsureWireGuard Ensures the WireGuard server container is running
Add-WireGuardPeer Adds a new peer (client) configuration
Get-WireGuardPeerQRCode Generates a QR code for easy mobile client setup
Get-WireGuardPeers Lists all configured peers
Remove-WireGuardPeer Removes a peer configuration
Reset-WireGuardConfiguration Resets the WireGuard configuration

Detailed Usage

Setting up the WireGuard Server

# Basic setup with default settings
EnsureWireGuard

# Custom setup with specific port and container name
EnsureWireGuard -ContainerName "my_wireguard" -ServicePort 51821

Managing Peers (Clients)

# Add a new peer with default settings
Add-WireGuardPeer -PeerName "Laptop"

# Add a peer with custom allowed IPs
Add-WireGuardPeer -PeerName "Phone" -AllowedIPs "10.13.13.2/32"

# Generate a QR code for easy setup on mobile devices
Get-WireGuardPeerQRCode -PeerNumber 1

# List all peers
Get-WireGuardPeers

# Remove a peer
Remove-WireGuardPeer -PeerName "OldDevice"

Client Setup

Android

  1. Install the WireGuard app from Google Play Store
  2. Use Get-WireGuardPeerQRCode to generate a QR code
  3. In the WireGuard app, tap "+" and select "Scan from QR code"
  4. Scan the QR code displayed in your terminal
  5. Tap "Create Tunnel" and activate the VPN connection

iOS

  1. Install the WireGuard app from App Store
  2. Use Get-WireGuardPeerQRCode to generate a QR code
  3. In the WireGuard app, tap "+" and select "Create from QR code"
  4. Scan the QR code displayed in your terminal
  5. Activate the VPN connection

Windows/macOS/Linux

  1. Download and install the WireGuard client
  2. Use Add-WireGuardPeer to generate a configuration file
  3. Import the generated .conf file into the WireGuard client
  4. Activate the VPN connection

Troubleshooting

Common Issues

  • Connection Timeouts: Make sure port 51839/UDP is open in your firewall and forwarded in your router
  • Client Can't Connect: Verify the endpoint IP address matches your server's public IP
  • Configuration Errors: Check for proper configuration by examining the peer details
  • Docker Issues: Ensure Docker is running and that the container has the necessary permissions

Logs and Diagnostics

To view the WireGuard server logs:

docker logs wireguard

Additional Resources