How to make iCal Server work both behind a firewall and externally

I've got iCal server running with a DNS record pointing to the external IP of our server and the appropriate ports open in the firewall. This is working fine. However, I can't seem to figure out how to get it recognized on the internal LAN. I tried activating DNS on the server using example.com and the actual domain name that is being used externally, but neither seemed to help get the iCal server to be recognized internally. I know there is some (probably simple) step I am missing somewhere, but I have not been able to figure it out. I've been reading the server docs and haven't been able to pinpoint what I am missing so I'm hoping someone here might be able to explain to me what the necessary steps might be.
Please try to explain this as if you're speaking to someone who is really dumb, because that's how I feel right now.
Thanks!

So you have an external static public IP, a firewall NAT, and an internal static private IP, right?
This sounds like an IP routing issue, or a DNS issue, depending on how you want to deal with it.
Either tweak your local DNS to point to your local private IP for the iCal server directly and not to the external IP address, or configure your local IP network default gateway and IP routing to allow IP to route the external IP address request out and back in through the NAT again (which is where you're probably running off the rails here), or see if iCal will allow you go go after an internal network host name in your internal DNS with your internal private IP address, or (as a test) directly after the local iCal server by its private IP address.
A whole lot of Mac OS X Server really only works "right" if you have IP and DNS configured appropriately. (I was going to write "correctly" there, but there's usually no one "correct" configuration when dealing with IP networking.)

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Hi,
I can create, edit and view events on the web calendar.
I can create, edit and view my own events via iCal.
How can I set it up so we can see all the calendars from our group on the web calendar? It's empty now other than what's entered via the web calendar.
Is there really no integration between the two?

I too thought web group calendar was subscribe only in iCal until I ran across the procedure at
http://www.macosxhints.com/article.php?story=20080410162942908
in the 4th comment down by protean. With a couple of additions I was able to post an event to the web group calendar and have an update on the web post back to the iCal calendar. My additions were needed to get the results as posted in the comment:
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3) add all members in step 3 of the procedure including yourself, however, if the owner of the group (e.g. diradmin) is not a member then don't add it,
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So I got this to work.
Then I setup a location in Directory.app with Delegates as the group. It shows up in iCal under Delegates calendar with the error notice
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So there is no calendar available for the location in iCal. The personal iCal account shows the Delegation of location and the Show checkbox is selected. The group is allowed to select the location on the web calendar and in the server iCal calendar. But the location doesn't indicate conflicts in the availability pane. Can someone tell me what might be missing?
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Drawbacks of my technique: In my case, students will see all 3 printers (1 from each lab) available to them no matter which lab they are in. Not the best, but for now I think it’ll be worth it to be able to control wasteful printing. Students may be able to move/delete the preference file (see below), but they’ll only be hurting themselves, as they won’t have any printers at all then.
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David,
Your assumption that I didn't read the documentation is incorrect. I read that 10.4 documentation over and over - followed it to the letter to no avail. Perhaps it was updated in the last few weeks? So, do you have a fully operable printer quota system in conjunction with a managed computer or user group that has a managed printer pushed to the group via Workgroup Manager? I can push a managed printer to a managed group without a problem, but the quotas won't be enforced unless I use the workaround above and cut Workgroup Manager's managed/pushed printer out of the picture.
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How to make iCal Server work both behind a firewall and externally

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