Port 51820 — WireGuard
Quick reference for TCP/UDP port 51820, used by WireGuard. Includes what the service does, security guidance and related ports.
Port
51820
Protocol
UDP
Service
WireGuard
What is port 51820?
WireGuard VPN default.
What port does WireGuard use?
WireGuard listens on port 51820 by default.
Security guidance
Low risk — designed for public exposure
Port 51820 (WireGuard) is designed for public exposure. Standard hardening (TLS certs, current firmware, sensible rate limits) is enough — no special isolation needed.
Related ports
Frequently asked
What is port 51820 used for?+
Port 51820 is the standard TCP/UDP port for WireGuard. WireGuard VPN default.
What port does WireGuard use?+
WireGuard listens on port 51820 by default.
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