How does WireGuard key authentication work?

WireGuard uses Noise Protocol handshakes with Curve25519 elliptic curve keys. Each peer has a private key and shares a 32-byte public key. By matching public keys and AllowedIPs on both the server and client, peers establish mutual encryption with minimal overhead.

What is PersistentKeepalive in WireGuard client configurations?

PersistentKeepalive = 25 sends an authenticated heartbeat packet every 25 seconds. This keeps stateful NAT mappings and stateful firewalls (like home routers or cellular networks) open so the server can push inbound traffic back to the client.

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WireGuard VPN ConfigKeypair & QR OpenSSL & CSR BuilderSAN & Certs

Curve25519 Cryptography • Server • Client • Mobile QR Code

WireGuard VPN Config & QR Generator

Generate synchronized WireGuard server (wg0.conf) and client configuration profiles with Curve25519 keypairs and instant mobile QR codes.

Server Endpoint (IP/Domain):

Listen Port (UDP):

Server VPN Subnet:

Client Tunnel IP:

DNS Resolvers:

Allowed IPs (Routing):

Server WAN Interface:

# ==============================================================================
# WireGuard Client Configuration (wg-client.conf)
# ==============================================================================

[Interface]
PrivateKey = 
Address = 10.66.66.2/32
DNS = 1.1.1.1, 1.0.0.1

[Peer]
PublicKey = 
Endpoint = vps.example.com:51820
AllowedIPs = 0.0.0.0/0, ::/0
PersistentKeepalive = 25

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VPN Cryptography

Understanding WireGuard Architecture & Noise Handshakes

WireGuard is an ultra-fast, stateless VPN protocol that operates silently. Unlike OpenVPN or IPsec which send continuous ping packets, WireGuard is completely silent when idle and does not respond to unauthenticated port scans, making your VPN server invisible to automated internet scrapers.

WireGuard Knowledge Base

WireGuard VPN Config & QR Generator

Understanding WireGuard Architecture & Noise Handshakes

Frequently Asked Questions