Need advice with Network setup and config!

I have T1 with 13 usable public IP's, Netopia 4622 T1 router, Netgear GSM7224 layer 2 managed switch, 4 servers and 2 desktops. Unfortunately, we don't have a network specialist, so I need an advice. What is the best way to setup our network? Which unit should be DHCP server - router, or switch? I don't need any private IP's like 192.168......., since I have 13 static IP's (which are included in T1 package and doesn't cost us anything). Actually, I can assign 7 static public IP's for all 7 units, but also, I want to be able to hook, for example, a laptop and make sure the dynamic IP will be assigned with no problem.
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vadim63Asked:
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rshooper76Commented:
If you have a Windows 2003 server set up a Domain Controller role. Use your router to statically NAT public addresses to the web server private addresses.  You coudsl have all these servers in one "Windows Domain", which is different than the Internet Domain Name.  As long as the MX records for these domain are pointed to one of you Public IP Addresses you should be able to point these to the server using a Static NAT enttry on the router.  The best thing to do is to put the web servers in a DMZ abd use thier public addresses directly.  That would isolate your Local Network from the Internet accessible servers.  I am more familair with Cisco equipment than woith the eqipment you are using, but I would think you can do the same thing if you have an available interface.
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rshooper76Commented:
I would have your Domain Controller do DHCP, my second option would be the router.  A windows server will be eaiser for you to manage your DHCP though, espicially if you don't have a network specialist.  I would also user NAT and Private addresses in your network even though you have enough Public IP's.  It will create a more secure network environment.  Also, make sure that you get a good firewall, i'm not familiar with your Netopia router but if it can act as a firewall set it up.  If not, a good firewall is worth the investment.  
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vadim63Author Commented:
Unfotunately, I'm unfamiliar with Domain Controller. What is it? Did you mean another server? Could you be a little more specific? The router itself has a firewall. All incoming traffic is blocked. The only ports 80 and 3389 are open.
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christsisCommented:
Some people believe everyone has a Windows server... :)

The router should be the one running DHCP as the switch is Layer 2 it really shouldn't have a clue about the IP addressing (Layer 3) or DHCP. So I'm not even sure it's possible to do there.

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txw9155Commented:
A Domain Controller is the security database for Active Directory which you could run on one of your 4 servers if you wanted or needed to. I guess it depends on what you are going to be doing with this network setup. You can run dhcp off the router using public addresses, but i agree with rshooper, 192.168 would give you more secure environment unless you had a reason you needed to run with public IPs.
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vadim63Author Commented:
Actually, I have Windows Server 2003 Ent. But I wouldn't say there's even a network. So the servers are web, mail, and one SQL server. 3 web servers with different domain names, running IIS6 (aspx's) and mail. So, the desktop is like a console, that's it. There's no private network. This a long story. Just one guy from Kazakhstan wants to run 3 web sites and he paid for that. He has a big money, but not a knowledge. He bought 4 Dell poweredge servers, switch, Windows 2003 enterprise, SQL server and T1. And now all that mess should be working. So, what is the best solution?
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vadim63Author Commented:
Thank you rshooper76, I'll try it tomorrow.
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vadim63Author Commented:
Thank you, rshooper76. I did exactly, as you described. It works. I still have more questions about LDAP and DC, but I can get all info from microsoft.com, Thank you again.
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