what ports and protocols did you open? and which way
Ports opened are 82, 8081, 8082, 8443, 8444, 1443 ,8801 that are opened in server side in DMZ and also in client side which are in the internal network with different subnets.In the fortinet these port are allowed. whereas client side firewall are disabled. Epo server is installed in windows server 2008.
Forgive the comment but that seems like a rather strange way of doing things. I would have thought that putting the ePO server inside your network and then putting an agent handler in the DMZ would be a better approach...
Is there a particular reason that the server has to be in the DMZ?