Hamachi uses a specific UDP port to negotiate tunnels. If this port is blocked by the router's firewall, the connection defaults to "Relayed."
Access Router Configuration:
Configure Port Forwarding:
Enable UPnP (Alternative to Manual Forwarding):
If the port is forwarded but traffic is still blocked, the OS firewall or 3rd party antivirus (e.g., Norton, McAfee, Windows Defender) is likely the culprit. hamachi relayed tunnel to direct tunnel fix
Command Line Test (Admin):
3rd Party Firewalls:
When the UI lies to you, use the Hamachi command line.
If you see "Symmetric NAT": You cannot fix this on your end. You must: Hamachi uses a specific UDP port to negotiate tunnels
To fix the Hamachi relayed tunnel issue, follow these steps: