💡 : 51820 is only for UDP traffic. If you configure a TCP rule by mistake, the VPN will not connect.
: If your ISP blocks port 51820, you can change it to another common port (like 443) in your [Interface] configuration. 51820 rar
: By default, WireGuard does not respond to pings or handshakes unless the sender has a valid public key, making it invisible to port scanners. 💡 : 51820 is only for UDP traffic
Unlike many other VPNs that use TCP, WireGuard strictly uses . If you do not explicitly allow UDP traffic, the connection will fail without an error message because WireGuard is designed to be "silent" and not respond to unauthorized packets. ## Network Setup Steps 51820 rar