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How to configure separate networks for SBS and Win2k Servers

How do I configure separate networks for a windows Small Business Server 2003 server and a Win2k Server. We have two organizations that are currently sharing a Win2k server that is attached to a Cisco 1721 router and an HP 4100 switch . We have a T1 line with dedicated Internet services. We have 13 IP addresses but we only use one IP Address.

Because of changes in the business we have put the the organizations on separate servers but we want to continue to share the Internet Connection. We have purchased a new SBS Server Machine with two NIC Cards for one of the organizations. We plan to leave the other orgranization on the existing Win2k Server.

What do we have to do to separate the two networks but still share the ISP services? For legal reasons I cannot route traffic through the same server. . . . .

2hype

Internet - Switch -- Router -- oldWin2k - Network
|
------- Router - newWin2k - Network

What about something like the above?

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VerifyMe

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adam_pedley

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adam_pedley

> Make sure you dont create a router between the two networks and that way they wont be able to interact.

Should be
> create a static or dynamic route between the two networks

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prashsax

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xpressaccounts

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Thank all you guys for the suggestions. I'm a novice when it comes to networks so please excuse if my questions lack understanding of what you are suggesting I do. I'm still a little foggy but this dialog has helped.

First let share some more background. My current Win2k server and LAN uses static ip addresses and it is configured as Workgroup not a Domain. What I want to do is take about 12 of my users and put them on the new SBS 2003 Server, leaving the rest of my users on the win2k server and LAN.

Here are the current Windows XP PC Configurations:
Default Gateway for PC's: 192.168.1.1
Static IP Address for PC's 192.168.1.xxx(unique to each PC)
Server IP - 192.168.16.2

WAN/ Router IP Addresses from SBCIS:
Available IP's - 72.145.26.98-126
Router Lan Interface Address - 72.145.26.97
SBCIS WAN Interface Serial Address - 71.254.73.153
Customer WAN Interface Address 71.254.73.154
What are the specific changes I have to make to my router? if any? What are the specific changes I need to make to the switch? if any? What changes do I need to make to the server? Old or New?

Thanks I appreciate the help.