working with 2 domains on one physical network for inetrnet/e-mail access

By esocarras1 ·
Hi this is my situation..
we are merging 2 companies, both have an existing domain in place Company A (win 2K, campanyA.local,,
Company B (Win SBS 2k3, companyB.local,,, no exchange installed/active)

We are physically moving Company B and it's servers to Company A's office..we don't currently need them to communicate between each other at this point (maybe in the future) so all I need is for Company B's workstation/servers to communicate with each other (with it's own domain) and for them to be able to access the internet and retrieve pop-e-mail from our ISP (no exchange installed yet). We have a symantec gateway security 420 router (DHCP enabled .11-.50 scope) which is a little confusing to configure..

What router configurations if any need to be done, what subnet issues do I need to consider (or can they reside on the same subnet?), are there any AD considerations..can this be done easily or what better suggestions does anyone have?


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2 Domains 1 subnet Problems? Feedback?

by mkrom In reply to working with 2 domains on ...

I have a simular problem. In your case, if you did not want to share network wiring and resources I would just Company B's network in and have it connect to the Internet using a 2nd IP address from your ISP, T1 and Cable normally provide more then one IP address per customer.

My problem is wanting to move company server and workstation right on Company A network. This would allow Company A amd B to share network wiring and resources such as printers. I believe it would require disabling company B DHCP and changing Company B AD controller IP address. I would like to get the feedback of someone that has made a simular move.

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