This article lists the different addresses and ports of backend services used by DDI 5.1 EN that should have the "Allow" rule on firewall.
The following list contains the addresses and ports that should be whitelisted to allow access through the firewall:
If you are using the vDDI and have enabled the Deep Discovery Analyzer as a Service Add-on (A hosted service that analyze possible threats), the following addresses should also be whitelisted:
It is highly recommended to test communications with Trend Micro backend services via the Network Service Diagnostics feature.
To run the Network Service Diagnostics, go to https://DDI_IP/html/troubleshooting.htm then click Network Service Diagnostics > Test.
Click image to enlarge
For more service addresses and ports used by DDI 5.1 EN, refer to Appendix D of the offical Administration Guide.