Port 51820

Q: What is port 51820?

WireGuard — modern, fast, and lean VPN protocol UDP port 51820 is the default port for WireGuard, a modern, extremely fast, and secure VPN protocol. WireGuard has only ~4,000 lines of code (compared to ~600,000 for OpenVPN), making it far easier to audit and maintain. It is built into the Linux kernel since v5.6 and is also available for Windows, macOS, iOS, and Android. Its simplicity and performance make it the preferred choice for new VPN deployments.

WireGuard

WireGuard — modern, fast, and lean VPN protocol

Port

51820

Protocol

UDP

Service

WireGuard

Security

Safe

Full name: WireGuard VPN

What is port 51820?

UDP port 51820 is the default port for WireGuard, a modern, extremely fast, and secure VPN protocol. WireGuard has only ~4,000 lines of code (compared to ~600,000 for OpenVPN), making it far easier to audit and maintain. It is built into the Linux kernel since v5.6 and is also available for Windows, macOS, iOS, and Android. Its simplicity and performance make it the preferred choice for new VPN deployments.

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