Internet with multiple static ip

[llam]

Currently my company is running 70 workstations and 7 servers on 4 stackable switches. We are going to setup our own email server. Previously, I have upgrade the internet service from pppoe to a package that comes with multiple static ip. We will use cisco 800 series router.

My question is how can I assign the static ip to my server? We are going to run MS Exchange 2000. Should the server hosting Exchange have static ip? or the active directory? We are going to implement Symantec Web Security and Symantec Anti-virus for Gateway. Should the machine hosting anti-virus be the only machine directly connected to the internet router? If so, does it mean that would be the only machine hosting a static ip?

Thanks in advance!

-- llam

 

[ChrisAC]

If I were you I'd put a firewall behind the ISP router with a static IP and then your LAN with a private range behind that. Assign a live static IP to your mail server which will then be used for the MX record for mail. Give the mail server a private IP on your LAN and have the firewall do a static NAT translation from the public IP to the private IP.

Slightly off the subject, be aware that by default Exchange is an open relay so make sure that it's only set up to relay for your domain.

Chris.
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Chris Andrew, CCNA
chris@iproute.co.uk
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[llam]

Right, I am going to setup a linux box to run as a firewall with translating a static ip into exchange server's private ip.

>> Slightly off the subject, be aware that by default
>> Exchange is an open relay so make sure that it's only
>> set up to relay for your domain.

Oh! I have no previous experience setting up exchange. What do you mean by open relay? How do I set it to relay only for my domain?

There's too many things that I do not know what to do. Thank you Chris and thanks tek-tips.

-- llam