If you cannot connect to a Stripe Terminal Smart reader from your point-of-sale device using one of the Terminal sdk, your network might have a firewall blocking the protocols and ports the devices use to connect to the readers.

Note: this does not apply if you are using our mobile readers (Wisepad3, Stripe reader M2), or using our Server-driven integration with our smart readers (WisePOS E, S700).

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.

Additional information

• The Stripe Terminal SDK is encountering DNS errors when connecting to an Internet Reader