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To reach your own server remotely with WireGuard, configure a peer on the server and another on your device, choose exactly which addresses should travel through the tunnel, and make the server’s UDP endpoint reachable. Access to the server itself is simpler than reaching devices on its local network or routing all your internet traffic through it; those broader designs also need appropriate forwarding and firewall rules.
Choose what the VPN should let you reach
WireGuard transports IP packets between peers whose public keys are configured. It does not automatically expose every device on your home network or route all client traffic through the server. The WireGuard conceptual overview describes AllowedIPs as both routing information and a way to associate permitted source addresses with a peer.
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| Access goal | Client-side AllowedIPs scope | Additional network work |
|---|---|---|
| Reach services on the server | The server’s tunnel address, or its tunnel subnet if you deliberately use one | Allow the intended service through the server’s host firewall. Routing to the server’s tunnel address usually does not require forwarding traffic to another machine. |
| Reach selected devices on the server’s LAN | The specific LAN subnet or addresses to reach | Enable IP forwarding on the server and configure firewall rules and, if the topology requires it, NAT or a return route. |
| Send all client internet traffic through the server | A default route, commonly written as 0.0.0.0/0 and, for IPv6, ::/0 |
Enable forwarding and configure firewall/NAT policy, internet egress, and client DNS behavior. Include IPv4 and IPv6 only if you intend to route both. |
These are different designs, not interchangeable settings. A default route is much broader than a route for one server or LAN. Pick a private tunnel subnet that does not overlap networks you commonly use, such as a workplace or hotel network.
Install WireGuard and create a separate key pair for each peer
Install the official WireGuard tools or application on the server and every client device. The project’s installation page lists supported platforms and installation options; consult it for current packages rather than relying on a version number that may have changed.
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Generate a distinct key pair for each peer and keep each private key on that peer. The official Quick Start shows this shell pattern on a system with the WireGuard command-line tools:
umask 077
wg genkey > server_private.key
wg pubkey < server_private.key > server_public.keyRepeat with different filenames for each client. umask 077 restricts access to newly created files for the account running the commands. Exchange public keys only; never send a private key to the other peer. Keep protected backups if you need recovery, and replace a peer’s configuration if its private key is exposed.
Plan tunnel addresses and AllowedIPs
Choose a tunnel address for each peer from the tunnel subnet, then decide which remote addresses each peer should send through the other. In a simple two-peer example, the server might use 10.7.0.1/24 and the client 10.7.0.2/24. These are illustrative addresses, not a required WireGuard range.
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On the server, the client peer’s AllowedIPs normally includes that client’s tunnel address, such as 10.7.0.2/32. On the client, the server peer’s AllowedIPs should cover the server’s tunnel address and any additional networks you chose to access. Add the LAN subnet for selected-LAN access; use a default route only when you intend full-tunnel routing. The server and client entries do not have to be identical: each describes the addresses associated with that peer from its own side.
Configure the server and client
The following is a structure example for the wg-quick helper. Replace every placeholder with values from your own network; do not paste bracketed placeholders literally. Interface names and configuration paths can vary by operating system.
Server configuration
[Interface]
Address = 10.7.0.1/24
ListenPort = 51820
PrivateKey = <server private key>
[Peer]
PublicKey = <client public key>
AllowedIPs = 10.7.0.2/32For multiple clients, add a separate [Peer] entry for each public key and its assigned tunnel address or addresses. Do not reuse one client’s private key across devices.
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Client configuration
[Interface]
Address = 10.7.0.2/24
PrivateKey = <client private key>
[Peer]
PublicKey = <server public key>
Endpoint = <server public IP or DNS name>:51820
AllowedIPs = 10.7.0.1/32Change the client’s AllowedIPs to include the chosen LAN subnet or default route if that is the intended access scope. The server’s peer entry needs the client’s public key; the client’s entry needs the server’s public key. The endpoint is the public-facing address and UDP port at which the client can reach the server.
wg-quick can handle routine interface setup and teardown. On systems where it is installed and configured, a typical Linux command to bring up this example interface is wg-quick up wg0; use the relevant operating system’s instructions for starting it at boot and managing it safely.
Make the UDP endpoint reachable
WireGuard uses UDP. Allow the configured listen port—in this example, UDP port 51820—through the server’s host firewall. If the server is behind a home router, forward that UDP port from the router’s internet-facing interface to the server’s LAN address. A firewall allowance on the server alone cannot make an unreachable upstream endpoint accessible.
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If the public IP address changes, use a maintained DNS name or update the client’s endpoint address. The server also needs a reachable public endpoint: upstream carrier-grade NAT or another network arrangement that prevents inbound connections may require a different network solution. WireGuard supports endpoint roaming after authenticated traffic, but that does not remove the need for the initial endpoint to be reachable.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Enable forwarding only for traffic that must pass through the server
If clients need only services hosted on the VPN server itself, traffic addressed to the server’s tunnel IP may be handled without forwarding packets to other machines. For LAN access or full-tunnel internet access, the server must forward packets between the WireGuard interface and the destination network, and its firewall must permit the intended flows.
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Test the actual access you configured
- Bring up both peers. Start the server interface and connect from the client while it is on an outside network, such as cellular data rather than the same home Wi-Fi.
- Check the WireGuard status. Use the platform’s WireGuard status view or command-line tools such as
wg showto inspect the interface and latest handshake. A recent handshake indicates that peers authenticated and communicated; it does not prove that routes, DNS, forwarding, or service firewalls are correct. - Test the server itself. Connect to the server’s tunnel address and then test the specific service and port you intend to use. A responding tunnel address does not guarantee that an application is listening or permitted by the host firewall.
- For LAN access, test a selected LAN device. Try its LAN address and intended service. If the tunnel handshakes but the device cannot be reached, check client
AllowedIPs, server forwarding and firewall policy, and the LAN’s return route or NAT behavior. - For full-tunnel access, verify egress and DNS. Check that internet traffic exits through the server as intended and that DNS queries use the resolver you chose. Test IPv4 and IPv6 separately if both are meant to use the tunnel.
Use PersistentKeepalive only when the network needs it
WireGuard is quiet when idle. If a client behind NAT or a stateful firewall must remain reachable after it has sent no traffic for a while, a keepalive can refresh the network mapping. In that client peer’s configuration, add PersistentKeepalive = 25. WireGuard’s Quick Start describes 25 seconds as a sensible interval for a wide variety of firewalls, while noting that the option is disabled by default. Leave it out when idle reachability is not needed.
What WireGuard protects—and what remains your responsibility
WireGuard authenticates configured peers and encrypts traffic sent through the tunnel. Its protocol documentation describes components including Noise_IK, ChaCha20-Poly1305, Curve25519, BLAKE2s, SipHash24, and HKDF, along with periodic handshakes that rotate session keys and an optional preshared key mixed into the public-key cryptography. WireGuard states: “We require authentication in the first handshake message sent because it does not require allocating any state on the server for potentially unauthentic messages.” The explanation says an unauthorized client receives no response. See the project’s Protocol & Cryptography documentation.
A VPN does not secure the server by itself. Keep the operating system and exposed services maintained, protect private keys, limit each peer to the routes it needs, and retain a deliberate firewall policy. WireGuard leaves key distribution and configuration delivery outside its scope, so you are responsible for how peer configurations are created, shared, updated, and revoked.
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