Splashtop supports end to end connection using QUIC protocol, which in some cases can improve the performance of the remote connection. Please be noted, per different firewall and network configuration, QUIC feature might not work in certain situations.
QUIC is a network protocol introduced by Google, and aims to provide much reduced latency remote connections, more details could be found on the wiki page.
Requirements
Endpoints:
- Splashtop Business app v3.5.2.2 or later.
- Splashtop Streamer v3.5.2.2 or later.
OS version:
- Windows 10 or later.
- macOS 10.15 or later.
Get started
Once enabling the QUIC, when establishing a remote session the Splashtop Personal app will be best effort trying QUIC connection, and if it is not supported due to different firewall/network environments, the remote connection will be taking advantage of our relay servers, just like normal remote connections.
- On the computer list in the Splashtop Personal app, click the gear icon of a computer profile. There will be a toggle to turn on QUIC.
How to verify if it is QUIC or normal relay protocol used in a remote session
- During the remote session, click the eye-like icon on the toolbar, then Performance Status
- In the status window, you can check the Connection type.
How to configure my router/firewall to support QUIC
To configure your router or firewall to support QUIC, follow these steps:
TCP Configuration:
Please refer to the article below, as TCP configuration is the same as standard Splashtop connection:
What are the Firewall Exceptions and IP addresses of Splashtop servers/Services?
UDP Configuration:
For UDP traffic, you need to configure two sets of rules:
-
Specific UDP Port Configuration: Whitelist the following domain and port combination for UDP traffic:
- Domain: *.relay.splashtop.com
- Port: 3479
- Dynamic Port Configuration: Allow all UDP ports. QUIC operates on dynamic ports, so you need to allow all UDP ports for the QUIC connection. Splashtop will randomly pick one of these ports during communication.
Note: If you need the IP addresses of the Splashtop QUIC servers, please contact our support team.