Firewall & VPN configuration
Last updated: May 13, 2026
In normal conditions Videosync will work fine on any network having access to public internet with HTTPS connections. However, in corporate networks you may need to adjust your Firewall or VPN rules.
Videosync event viewers
To make sure that Videosync is working smoothly in your network, you should make sure that following domains are accessible by user. We also recommend you to configure split tunneling in your VPN for the main domains to avoid unnecessary load to your network.
Viewing pages and the video stream
We recommend you to whitelist all HTTPS traffic to *.engagestream.euronext.com and *.videosync.fi
For the actual video stream delivery, we use HLS streaming delivered via AWS Cloudfront CDN.
Optional & external domains and their use cases
Player licensing: HTTPS to licensing.bitmovin.com (player actually works even if this domain is blocked)
Custom fonts from Typekit (if used in event): HTTPS use.typekit.net
Requirements for production crews using external RTMP encoder
This requirement applies only for internet connection used by stream production encoder (e.g. vMix or OBS).
For live stream encoding Videosync uses RTMP stream ingest. The encoder needs to have TCP port 1935 open to Videosync RTMP servers on domains: (IPs are unlikely to change)
| Domain | IP | Ports |
|---|---|---|
| eu-n-1.videosync.fi | 13.49.2.41 | TCP 1935, 443 |
| eu-n-2.videosync.fi | 13.48.36.178 | TCP 1935, 443 |
| eu-w-1.videosync.fi | 52.51.231.171 | TCP 1935, 443 |
As a technical producer, you can switch to RTMPS address (which is more likely to work in enterprise networks by default) by modifying the RTMP url to RTMPS url: rtmps://xxx.videosync.fi:443/acme_1
Videosync Web Studio requirements
Videosync Web Studio is powered by Daily.co & uses Daily’s infrastructure to power Videosync’s real time functionality.
Daily’s network requirements and guidance on corporate networks can be found here:
https://docs.daily.co/guides/privacy-and-security/corporate-firewalls-nats-allowed-ip-listDaily network compatibility test
When you open a Web Studio admin or speaker link, it automatically does a firewall check in background and if your Firewall limits your connectivity to Daily.co servers, you should get prompted a warning.
You can also use Daily network tests to verify your device & network readiness and to understand which connection might be blocked in your network or device.
New network test: network-test-v2.daily.co
Old network test: network-test.daily.co/index.html