>>My company is moving from Novell/IPX to NT 4.0 and TCP/IP with DHCP. I've always worked with IPX but never TCP/IP so I need help in clarifying some questions.
>>
>>Our company has a domain name registered and been given an IP address. This is for the web site that is hosted on an local ISP. When configuring my internal NT server to use TCP/IP and DHCP:
>>1. Can I use this same IP address for the internal NT server?
>>2. If so, what valid IP ranges can I use for the DHCP?
>>3. If not, do I need to obtain a new domain name/IP address for our internal network if we plan on connecting this server to the Internet?
>>
>>I also need to connect to my ISP to download our whole company's e-mail. I've heard that to do this with Exchange Server 5.5, I need to obtain a fixed IP address from my ISP.
>>
>>I know all this might sound confusing (because I AM confused) and even trivial but I don't know where to start.
>>
>>TIA
>>John.
>Hello John.
>
>1. You should contact your IPS to get your own set of legal IP adresses.
>
>2. You could set up your internal network like this:
>Subnet: 255.255.255.0
>IP: 192.168.1.*
>DHCP: 192.168.1.21 - 192.168.1.???
>Servers: 192.168.1.1 - 192.168.1.20
>
>3. When you want to connect your server to internet just add a
>new network card to your server with the legal IP you got from your ISP.
>You will also probably need to get a Firewall if you plan to connect your
>LAN to internet.
>
>If you are planning to have your domain on your own machin you should
>also install a DNS. This way you get total control over your domain.
>
>You can connect an xchange server directly to internet via IMS (Internet
>Mail Service). This way you have total controll of mailboxes.
>And yes you nedd to have a legal IP on this server to.
>
>When you apply for legal IP adresses make sure that you get so many
>you need. One for each machine you plan to connect to internet.
>
>/Magnus
>

Hello again.

I need to correct myself regarding applying for legal IP:s.

Each server that you connect to internet needs a legal IP not every machine.
If you install a Firewall all workstations share one legal IP.

Here's an exsample:

Webserver/DNS: 1 legal IP
Mailserver: 1 legal IP
Firewall: 1 legal IP

So each server that you connect to Internet needs a legal IP. And you can
also have multiple legal IP:s on a single server and even on a single
network card if you want to.

/Magnus