To ensure Safeguard works properly on all devices, it's crucial that communication through certain domains is allowed.

For communication with the Safeguard servers

Communication with the following domains:

- safeguardapp.nl

- safeguard-app.com

- sfgrd.nl

- s3.eu-west-1.amazonaws.com

For receiving push notifications

- iOS: see https://support.apple.com/en-us/HT203609

- Android: see https://firebase.google.com/docs/cloud-messaging/concept-options#messaging-ports-and-your-firewall

For the use of Push to Talk

- See https://support.twilio.com/hc/en-us/articles/115015934048-All-About-Twilio-IP-Addresses