*UPDATED 4/19/13 FOR RHEL6* SCROLL TO END OF ARTICLE
This has been a fun project because I'm a n00b at Linux. If you know a better way of implementing this, please let me know. Most of the walkthroughs you find online about setting up a vCloud Director Cell (such as yellow-bricks) talk about just turning the firewall off completely or they completely skip this step. I see why now. There are a bunch of services that need to talk not only to other vCloud Cells, but to other services all around the datacenter.
The VMware vCloud Installation and Configuration Guide shows us what ports need to be open, but I came up with a few different kinds of implementation scenarios.
The first thing you need to do during the initial setup is to make sure the Firewall is enabled and turn off any services that are checkmarked by default (SSH should be our only default)
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