Technical Requirements

Hardware

Each instructor requires access to a laptop computer with a front-facing camera and with the ability to disable the touchscreen during all instructional sessions. The laptop must be connected to the internet.

We recommend that the computer has at minimum 4 GB RAM and Intel Core i3 processor or equivalent. There is no minimum storage requirement, since no files are stored on the computer as part of the Once program.

Software/Networking

Once is cloud-based and does not require any software to be downloaded or installed.

The Once portal is available at https://go.tryonce.com. This URL redirects to a page built on Google Firebase. If your network filters out Firebase or redirects more generally, you will need to make an exception for go.tryonce.com.

The Once portal also utilizes the following services which should be whitelisted.

1. HTTPS connections to: • https://prod-ks.pluot.blue/* • https://c.daily.co/* • https://gs.daily.co/*

2. HTTPS connections converting to WebSockets on *.wss.daily.co

3. For best results, we recommend allowing traffic on *.daily.co.

4. http://gs.daily.co/ must be reachable on TCP/443

5. prod-ks.pluot.blue must be reachable on TCP/443

6. *.stun.twilio.com must be reachable on TCP/UDP/3478 or TCP/443

7. *.wss.daily.co should be reachable on TCP/443 and UDP/40000-65534

8. Additionally, your proxy server should handle these requirements if you're using one.