How to configure STATIC IP from ISP to the local network

By rajuact ·

I have my network deployed very well.
Well, I had to host FTP and WEB MAIL SERVICES, so I purchased about three static IP adddress from ISP.

Where am I suppossed to configure this IP in the server. I just need to configure FTP on PC and the other static ip address for the mail server. I still need the ( to sequence if got from ISP is different and unique. how do I configure.

Please guys help me out or direct me to any articles or downloads.

Please any suggestions or comments will be appreciated.


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I hope you didn't pay for the 10.0.0.* addresses...

by daveo2000 In reply to How to configure STATIC I ...

The 10.0.0.* addresses are referred to as non-addressable and can only be used for local networks (behind a gateway using NAT (network address translation) or something similar). This is also true of the 192.168.*.* addresses. You can find out more that you will want to know at to see if your addresses are, indeed, Internet addressable.

Now, back to the rest of your question. I don't understand what you mean by "I have my network deployed very well." If the network is already set up then what are these new IP addresses for?

Additionally, the services you mention are all on different ports so the IP address does not need to be different. With that in mind, lets move on to what you might really want to be doing:

You should have a firewall. This firewall should be capable of both port forwarding and NAT (as well as all of the other normal things a modern firewall does). The Internet side will have a fully addressable IP address. The LAN (Local Area Network) side can either be running DHCP and/or you can give your servers static addresses. For the sake of simplicity, let's just say that your server will be static addresses and your workstations will use DHCP.

If you set up the firewall with DHCP going from 100 to 199 (i.e.: to then you can assign your servers static addresses below 100. Your gateway shoud be so don't use that elsewhere.

Next, set up your FTP server as, for example,; your mail server as and your web server (if I understood that correctly) as

You will next go to the port forwarding screen for your firewall/router and configure the FTP ports to be forwarded to (same port numbers); the mail server to (same ports) and the web server to (same ports). A specific example is to tell the firewall "Forward port 80 to".

Does this seem to address your question?

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what's the perimeter router make model blah blah

by CG IT In reply to I hope you didn't pay for ...

your perimeter router has to be able to handle multiple global addresses so for you to do what you want to do, first is does your perimeter router have that capability?

After that, it's easy to forward traffic to specific hosts on the lan [also with static address mapping] or as dave2ooo says with port forwarding to specific hosts.

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by SWells In reply to I hope you didn't pay for ...

What Daveo2000 is correct, however I would look into whrther your router can handle a DMZ and set up the web server and FTP server on that DMZ instead of being a part of your network. If either of these servers become compromised, you want them firewalled from the rest of your network. The web server also doesn't need to be a part of your domain, it can be a stand alone box, just another small security feature.

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Thank You Dave

Dave I really appreciate your time for showing the highlights on configuration.

" Port Forwarding" was the missing deal here. Thanks for explaining that.

yes I did not purchase from ISP..(lol)!!!!

Appreciate your time man.

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Glad to help.

by daveo2000 In reply to Thank You Dave

Check back if you need more help.

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