...
Shift4 and Mira Pay customers should adjust firewall settings to expedite the Azure migration process.
In order to simplify the network configuration and support future growth, we’ve reserved a dedicated block of IP addresses, which you should add to your existing firewall rules. The new PrismWeb IP block is 52.142.31.64/29 (52.142.31.64–52.142.31.71).
We recognize that firewall changes must be carried out by your IT department, so we strongly encourage you to engage with them as soon as possible. Necessary firewall changes include:
Add an outbound firewall exception for TCP 80 (HTTP), 443 (HTTPS), 1443 FileCloud22 (SFTP) to the IP range 52.142.31.64/29 (52.142.31.64–52.142.31.71). This should only be additive. Do not remove or replace any existing rules.
...