Before diving into solutions, it's crucial to understand what these terms mean. When you connect to another computer via Hamachi, the software attempts to establish a (represented by a green dot). In this ideal scenario, Hamachi is able to create a peer-to-peer (P2P) connection between the two computers using a technique similar to UDP hole punching. Data travels directly between the two machines, resulting in the fastest possible speeds and lowest latency for gaming, file sharing, or remote access.
A direct tunnel represents the ideal connection. Hamachi successfully negotiates a direct peer-to-peer link between your computer and another peer. Data flows directly between both devices without passing through any intermediary server. This results in the and highest transfer speeds —perfect for online gaming, file sharing, and remote desktop access.
Forcing Hamachi to use specific ports prevents port conflicts and makes port forwarding predictable. Open Hamachi and go to > Preferences . Click on the Settings tab and select Advanced Settings . Scroll down to the Peer Connections section. Locate Static UDP Listening Port and set the value to 4171 . Locate Static TCP Listening Port and set the value to 4171 . Click Set , then click OK .
: Examines how to achieve direct P2P connections and automatic NAT traversal to reduce latency. hamachi relayed tunnel to direct tunnel fix
If your computer has multiple network connections (e.g., both Wi-Fi and Ethernet), Hamachi might get confused and route traffic through the wrong adapter.
Computers talk directly to each other. This is the ideal state for gaming and file sharing.
The most common cause is the Windows Firewall blocking the Hamachi client. Before diving into solutions, it's crucial to understand
Open the > Network and Internet > Network and Sharing Center . Click Change adapter settings on the left menu.
| Port | Protocol | Purpose | |------|----------|---------| | 443 | TCP | SSL failover / relay connection | | 12975 | TCP | Initiator port | | 32976 | TCP | Session port | | 17771 | UDP | Relay connection port (fallback) | | Static UDP port | UDP | Direct peer connection (must be set manually) |
For these situations, consider these powerful alternatives: Data travels directly between the two machines, resulting
: In the Hamachi client, right-click the peer and navigate to Details > Settings > Traffic and set it to Allow All . Related Academic and Technical Papers
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