If you cannot connect to a Stripe Terminal reader from your point-of-sale device, your network might have a firewall blocking the protocols and ports the devices use to connect to the readers. Please ensure the following protocols, ports, and IP addresses are allowlisted within your LAN:
TCP port 4443
TCP port 443 (HTTPS)
UDP port 53 (DNS)
Furthermore, all the domains listed on https://stripe.com/docs/ips must be allowlisted within your firewall settings.
If you are prompted with a “Set Network Location” prompt on a Windows computer, Stripe Terminal requires that you select the “Work” option. Selecting “Home” will block the network connections required for Stripe Terminal to function.