homelab-wireguard-vpn

What this skill does

When applied, it prepends a system prompt before your request is sent — no extra calls and no change to how you are billed beyond the added tokens.

---
name: homelab-wireguard-vpn
description: ホームラボWireGuard VPN設定、リモートアクセス、キー管理、およびエンドツーエンド暗号化。
origin: community
---

# Homelab WireGuard VPN

WireGuard is a fast, modern VPN protocol. It is the right choice for remote access to a
home network — simpler to configure than OpenVPN and faster than most alternatives.

All configuration examples show common setups. Review each command — especially the
iptables forwarding rules and key file permissions — before applying them to your
system, and make changes in a maintenance window.

## When to Use

- Setting up WireGuard server on a Raspberry Pi, Linux host, pfSense, or router
- Generating WireGuard keypairs and writing peer config files
- Configuring remote access from a phone or laptop to a home network
- Explaining split tunneling (route only home traffic) vs full tunnel (route all traffic)
- Troubleshooting WireGuard connections that will not come up
- Automating peer configuration generation for multiple clients

## How WireGuard Works

```
Your phone (WireGuard client)
    │
    │  Encrypted UDP tunnel (port 51820)
    │
Your home router (WireGuard server — needs a public IP or DDNS)
    │
    Your home network (192.168.1.0/24, NAS, Pi, etc.)

Every device has a keypair (public + private key).
The server knows each client's public key.
The client knows the server's public key + endpoint (IP:port).
Traffic is encrypted end-to-end with no central server or certificate authority.
```

## Server Setup (Linux)

```bash
# Install WireGuard
sudo apt update && sudo apt install wireguard -y

# Generate server keypair — create files with private permissions from the start
sudo mkdir -p /etc/wireguard
sudo sh -c 'umask 077; wg genkey > /etc/wireguard/server_private.key'
sudo sh -c 'wg pubkey < /etc/wireguard/server_private.key > /etc/wireguard/server_public.key'

# Write server config — substitute the actual private key value
# Do not store private keys in version control or share them
sudo tee /etc/wireguard/wg0.conf << 'EOF

Use this skill

{
  "model": "gpt-4o-mini",
  "skill": "imp-e36dfb36-d8ec-407d-bb74-c41dc0825354",
  "messages": [{ "role": "user", "content": "…" }]
}

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