When attempting to start the Enterprise Server, it initially shows that it is starting but then terminates.

The console log shows a problem with the Communications Server:

110630 09371747       2896 PAYROLL  CASCS5100I Communications Process instance 01 is ready to accept requests 09:37:16
110630 09372252       2896 PAYROLL  CASCS5007I Communications interface 01 termination started 09:37:21
110630 09372272       2896 PAYROLL  CASCS5008I Communications interface 01 termination complete 09:37:22
110630 09372493                             CASCD1039I ES Communications Server for ES PAYROLL has terminated normally 09:37:24

Log.html (MFCS process) shows:

2011-06-30 09:36:55.627 [1] MFDS control channel open at tcp:*:* (actual port 1138)
2011-06-30 09:37:16.509 [1] Micro Focus Common Client error: MccDoOpen: timeout connecting to server at 10.116.243.214,1138
2011-06-30 09:37:16.519 [1] Micro Focus Common Client error: MccOpen: Error opening conversation: (15) timeout expired
2011-06-30 09:37:16.519 [1] The DS Control Channel for this server ("PAYROLL") failed to respond: no response was received in 30 seconds
Verify your configuration, especially server endpoint specification

Add the machine's IP address to the firewall's "allowed" or "trusted" list. 

Note that in addition arrangements may need to be made to cater for the situation where the machine can receive a different IP address in the future (e.g. after a DHCP lease has expired).