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How to use multiple static public IP's on devices on the same network

  • 21-08-2008 11:54am
    #1
    RangeR
    Registered Users, Registered Users 2 Posts: 7,265 ✭✭✭


    Hi Guys,

    While I'm quite technical, I don't have much of an idea on how to do what I want.

    My setup
    =======
    Smart Telecom business conection with 5 static public IP addresses
    Endian firewall [Linux based] with one static IP on the Red zone
    Multiple computers on the network

    What I want to do
    ==============
    Assign one of the free IP addresses to a computer within our network so we can directly access it over the internet. The function of the computer is not important, it could be a web server, VPN server, FTP server etc.

    I'm just looking for pointers on how to set this up.

    I was thinking of just configuring the computer with a static ip address and see if it works. However, I don't see how this could get in through the firewall.

    I could possibly put it in the DMZ but again, unsure.

    As this point, it's all theory. I haven't actually tried anything yet. I'm just looking for best practice on what I should do.

    Hopefully some kind person can point me in the right direction.


Comments

  • #2
    Webmonkey
    Registered Users, Registered Users 2 Posts: 9,579 ✭✭✭Webmonkey


    Why don't you have static nat on the computer that you want to have a public address on - you can place a private IP internally and map it to one of the public ones 1:1 mapping.
    For the rest of the PCs you could use Overloaded/Port based NAT (PAT) on a single public IP address.


  • #3
    RangeR
    Registered Users, Registered Users 2 Posts: 7,265 ✭✭✭RangeR


    Cheers WebMonday. Not 100% sure what you are saying but I am 80%.
    At least you are giving me something to work with, which is a start.

    I'll research your ideas and let you know.


  • #4
    RangeR
    Registered Users, Registered Users 2 Posts: 7,265 ✭✭✭RangeR


    Small update :

    I found some interesting information in the admin manual. Don't have time to try it now but I'll give it ago tomorrow.

    Cheers again WM.


  • #5
    Webmonkey
    Registered Users, Registered Users 2 Posts: 9,579 ✭✭✭Webmonkey


    Good luck with it.


  • #6
    FruitLover
    Registered Users, Registered Users 2 Posts: 2,534 ✭✭✭FruitLover


    If this server is going to be accessed from outside, then you should have it in a DMZ. Ideally you don't want an externally-accessible server having full access in to your LAN.

    How you set this up will depend on your firewall - you could either have a private IP on the server and DNAT in to it from one of the external IPs, or assign the server one of the public IPs and bridge in to it (still firewall it of course!).


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