Hi all,
I have a fault tolerant deployment of FME Flow 2026.1 in our private AWS account. Our security team requires us to limit the number of ports to be opened between WebUI/Core and Engine hosts (eg. least privilege).
Is there a best practice rule/formula in calculating the number of ports required to be opened depending on the number of engines per host and the number of hosts in your deployment and the starting port number? Thanks
Example:
3 engines / host and 2 hosts = 6 engines
Is there a redundant factor that needs to be applied? eg. 2 times
Therefore 3 engines x 2 hosts x 2 redundant factor = 12 TCP ports are required.
The starting port number should be from 50000
fmeFlowConfig.txt
FME_SERVER_PORT_POOL=50000-50011
