Profile Manager and enrollment on a closed network

Hi,

I'm old hand at MS server stuff, but have only recently had the opportunity to start working on some nice mac machines.

Apologies for the probably dumb question, but I've had the same issue on 2 different sites 1 on Lion and 1 on Mountain Lion.

Both installs were vanilla out of the box installs, I set up Open Directory (I think correctly) and will be joining all the machines to AD as well.

But the issue I'm having is with enrolling machines to profile manager. Basically I can't. I can get the Trust profile installed and then Enroll. I can see that the Profiles appear on the client machines etc. Exactly as I would expect.

But, the machines never actually appear in the profile manager. If I prestage one, then join it, I can get it to lock etc. However, when I try to enroll the 2nd machine, the 1st one disappears.

I'm completely stumped on this and can't seem to find an answer anywhere.

The other thing to note, I think it may be relevant, is that both networks have limited http and https access to the rest of the world. They are on a closed council/school network and I'm not going to be able to get any ports opened up from the outside world.

Thanks very much in advance for anyone who can help!

Cheers,

Noel