EN

Port 51820 — WireGuard

UDP · Port 51820/UDP is used for WireGuard, a modern VPN protocol that provides secure and private internet access. It uses public key cryptography to establish secure connections between peers. This port is critical in securing online communications.

Port Number
51820
Service Name
WireGuard
Protocol
UDP
Common Software
WireGuard

Security Notes

Review IANA registry for port 51820 usage. Apply principle of least privilege - only open ports that are required.

FAQ

What is port 51820 used for?

Port 51820 is used for WireGuard. Port 51820/UDP is used for WireGuard, a modern VPN protocol that provides secure and private internet access. It uses public key cryptography to establish secure connections between peers. This port is critical in securing online communications. Common software: WireGuard.

Is port 51820 dangerous to leave open?

Review IANA registry for port 51820 usage. Apply principle of least privilege - only open ports that are required.

How do I check if port 51820 is open?

Use nmap: nmap -p 51820 <target> or check locally: ss -tlnp | rg 51820