Shift4 Duo Network Requirements
Description: Learn about the network requirements, supported Wi-Fi specifications, and necessary ports for optimal operation of Shift4 Duo, including guidance for ensuring uninterrupted connectivity.
Important: For Mozart, a Firewall Exception may need to be made for http://bootstrap.mozart.shift4payments.com/ to get the Shift4 Duo devices to work correctly.
Please refer to the Customer Site Readiness Guide for additional details regarding port numbers, IP addresses, and network configuration.
Network Requirements
The wireless requirement for a Shift4 Duo device is simple:
- Steady Internet Connection
- 5mbps Upload
- 5mbps Download
Shift4 Duo supports the Wifi network type 802.11 b/g/n, 2.4GHz, 802.11ac b/g/n, 5GHz.
The bandwidth requirement is minimal, and normal operation can function with no impact with as little as a 64k connection. However, with the apps being about 10 to 20 megabytes (MB) each, there may be some impact on the bandwidth when the app needs to be updated.
Required Ports
Contact your Internet Service Provider (ISP) to ensure they are not blocking any of the ports on your side.
IP Address
- Set the Wi-Fi router or Access Point to 192.168.213.2, which puts the Shift4 Network equipment on the same subnet. Both routers can be used to connect additional Shift4 devices.
- Disable the Dynamic Host Configuration Protocol (DHCP) server on the Wi-Fi router or Access Point to ensure that your existing TP-Link router continues to assign IP addresses. This prevents IP conflicts caused by two DHCP servers issuing the same IP addresses to different devices.
- Set Domain Name System (DNS) to 8.8.8.8.
Network Security
It is recommended not to use WPA3 with Shift4 Duo or other PAX devices.