multi ip from one ISP setting.HELP!!

[moswind]

Hi all:
I have a probrem for setting my gateway.I have rent 5 ip from my ISP,they are the same gateway and I have a machine that has 8 network port.I want to use the 5 ip for different port forward to my intranet server.How to setup?
when I set the 5 ip in my machine.it only can reach one on internet.When I use some ip rule that I find from the net.It can ping the 5 ip from internet but can't forward to my intranet server.Please help!! Thank you!!

[gerald_clark]

Those 5 IP addresses are provided so you can connect 5 routers and run 5 networks.

[Super Jamie]

He's got 5 public IPs with the same gateway, so he's got a /29.

You want to look up how to NAT.

[orever]

You don't need a separate network port per IP address. You can setup aliases on a single network port to use all of the IP addresses, which will look something like: eth0:1, eth0:2, etc... "eth0" would be the physical device, and each ":X" number is an alias. I will not explain how to do that here, please Google it. Most of your question deals with the specifics of how your router and ISP connection is setup, which is difficult to discuss without more details and is also outside the scope of this forum.