Not every machine is easily accessible, and maybe that’s for the best.
The Relay provides a reliable way to reach devices that are unreachable otherwise.
Reach difficult locations
Some environments have highly restricted firewalls and NAT’s. In such an environment, sometimes a direct peer-to-peer connection is impossible. In such scenarios, a Relay can handle communication to and from these devices.
Controlled access for controlled devices
Sometimes you dont want peer-to-peer access to particular devices. Perhaps you want to tightly control the traffic entering and leaving devices in a particular network. Here, a Relay can provide a reliable gateway to control that traffic.
Netmaker sends out updates to the machines, telling the relay to route traffic for these devices, and telling the relayed devices to send all traffic to the relay.
Dynamic Relay
1
Sometimes nodes are in hard-to-reach places. Typically this will be due to a CGNAT, Double NAT, or a restrictive firewall. In such scenarios, a direct peer-to-peer connection with all other nodes might be impossible.
2
‍You can choose any public node in the network to be a failover, Once chosen any peers facing difficulties to communicate directly with each other, will have connection go over the failover node.
To reset the network connections, you can remove the failover node, and network will go back to original state from if any connections are getting failed over.
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