UDP

Reemo uses the WebRTC Peer to Peer network technology. This technology is commonly used in VOIP services and we share the same network concepts.

2 connection types are possible with Reemo: Relay/UDP and Direct/UDP. A Direct/UDP connection is not possible behind a Symmetric NAT. To know which connection you are using, please check your Reemo control bar while in a session:

This page will try to explain each connection type with their pros and cons as well as the different NAT types.

Note

If your connection is always in Relay/UDP and you would like to get the best performances with Reemo, please use our Connectivity Test and follow our guide: HOWTO: Use the Connectivity Test

Relay/UDP

This connection type is using the Reemo infrastructure to relay your video stream through a relay server located in Paris (France) adding latency and friction.

Pros: Strict firewall filtering, works on all type of networks
Cons: More latency and possible packet loss

Note

Because our relay servers are located in France, using a Relay/UDP connection might degrade your latency too much. But it is possible for your Organization to use its own TURN servers. To know how to configure your custom TURN servers on Reemo please read our guide: HOWTO: Configure your custom TURN servers

Direct/UDP

This is the optimal connection type. The connection is direct (P2P) between your local browser and the remote computer.

Pros: Optimal connection, best performances
Cons: Might require Firewall configuration

NAT Compatibility

Here is a compatibility table to understand in which cases a Direct/UDP connection is not available:

Remote / Local	Full Cone	Restricted Cone	Port Restricted Cone	Symmetric
Full Cone	Direct/UDP	Direct/UDP	Direct/UDP	Direct/UDP
Restricted Cone	Direct/UDP	Direct/UDP	Direct/UDP	Direct/UDP
Port Restricted Cone	Direct/UDP	Direct/UDP	Direct/UDP	Relay/UDP
Symmetric	Direct/UDP	Direct/UDP	Relay/UDP	Relay/UDP

NAT Source Port

HOWTO: Configure your pfSense Firewall

HOWTO: Configure your SonicWall Firewall

HOWTO: Configure your Juniper Firewall

Your firewall is not on the list, send us an email with your firewall type