The following page details the ports and IP-addresses used by the AS2 Cloud Relay platform.
On-premise firewall
This refers to the outbound firewall settings required for the on-premise Windows Service to perform message sending and receiving.
| Direction | DNS Name | Ports |
| Outbound (on-premise to Azure storage) | xxxx.blob.core.windows.net & xxxx.queue.core.windows.net where xxxx is the name of your Azure storage container. | 445, 443 |
The connection from your on-premise machine to your Azure storage container is not controlled by EIS, and as such we cannot provide a definitive list of IP address and ports used by Microsoft. It is recommended any outbound firewall rule is based on the DNS name. Microsoft do provided the following list of IP address: https://www.microsoft.com/en-us/download/confirmation.aspx?id=41653
AS2 EDI partner firewall
This refers to the firewall of 3rd party that will be receiving AS2 messages from an AS2 Cloud Relay service (they may use this in a white-list).
| Direction | IP Address | Ports |
| Inbound (EIS AS2 servers to 3rd party AS2 server) | 51.144.59.96 | 443 |