Windows Firewall on SBS 2003

I have recently reviewed a small office network that is running SBS 2003 and CA ITM eTrust.

The Windows Firewall is currently disabled, and there is no other firewall enabled on Server as far as I can tell. There is ofcourse the Internet Router providing protection to the outside world but still a concern.

What are the recommendations as far as recommending the firewall being enabled and what exceptions I will need to consider to limit downtime to Users?
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FlippAsked:
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Brian PierceConnect With a Mentor PhotographerCommented:
There is http://support.microsoft.com/kb/832017
But as MS say this should not be used to configure the windows firewall
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Brian PiercePhotographerCommented:
It all depends on what its being used for, if there is no remote access, no OWA then you can lock it down very tightly. Personally I would not rely on the Windows firewall alone - its simply not robust enough.
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FlippAuthor Commented:
Roles:
Internal DNS
Domain Controller
RRAS
OWA
Active Sync
File & Print

I would of thought there would be some doco on standard ports that would be opened .... ?
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FlippAuthor Commented:
Thanks.

I was hoping there would be a list of 'mostly used ports/exceptions' that I could focus in on. THis is a fairly standard SBS, but understand that not every server is the same.
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