Thanks for your reply. At the moment, we don't have a need to use UserID across firewalls and VSYS, however I do see a need in the future so I would the answer to that question is yes. We use Panorama and all the firewalls are configured to talk to it. we use it for firmware updates but due to the nature of our enviornment, we're not using it for rule managmenet. The domains do exist within the same environment so there is a trust between them. I didn't know we could use Exchange. In some cases a user would be using a workstation that doesn' have Outlook. The exchange environment sits in a resource type forest, there is a forest trust between those domains. We use OCS that for most people starts automatically. I think the questions are still open for me are, do I continue to use direct polling to the domain controllers or implement something with event forwarding, the location of the userID agent on the network for best performance and the firewall configuration to query them and how to implement redundancy incase one of the userID agents fails. Thanks again for your help.
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