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routing question

Discussion in 'Networking Issues' started by Vasesque, Mar 28, 2008.

  1. Vasesque

    Vasesque Addicted to LI Member

    Hello,
    I have a local lan(192.168.10.x) which is connected to the linksys rv082 router through one cable. The router is connected to the internet and has the ip xxx.xxx.76.70.
    My internet provider now lets me route the xxx.xxx.40.0/24 class of ips. I want to let most of the computers to remain behind the router and share the (xxx.xxx.76.70 ip), but I want to give some computers routable ips. (With a linux box I would have created a virtual interface xxx.xxx.40.1 which would have routed the computers with routable ips).
    Thank you.
     
  2. Vasesque

    Vasesque Addicted to LI Member

    Anybody?
     
  3. ifican

    ifican Network Guru Member

    If your current 76.70 address static?
     
  4. Vasesque

    Vasesque Addicted to LI Member

    Yes my 76.70 address is static.
     
  5. ifican

    ifican Network Guru Member

    Good, now is your isp going to have second interface with an ip from that subnet so you can us it (say 40.1) as your default gateway of are they strictly creating a route on their side that says 40.0/24 lives behind 76.60?
     
  6. Vasesque

    Vasesque Addicted to LI Member

    They have created a route on their side thats says 40.2/24 lives behind 76.60.
     
  7. ifican

    ifican Network Guru Member

    Well unfortunately there is no way to do this with your current setup. Since you only have 1 ip assigned from your isp you only have 1 ip to use as a public facing. So there are many ways of making this work, but it all comes down to 1 really. You need a router, that is strictly routing as the border device to your network. Ideally one with 2 internal L3 interfaces, one with your /24 public facing network and the other with a Nat network you can keep your protected host behind. If you do not have a router with 2 routable interfaces, you can use 3 soho type devices. The border device will be in route mode, the device connected to your /24 routable network will be in route mode, and the device connected to your protected network will be in gateway mode. Hope that makes sense. If you have any other questions please ask.
     
  8. Guyfromhe

    Guyfromhe Network Guru Member

    No guarantees, but you might be able to make a static route to put the whole class C across the wire to your linux box, you need to setup static routing back, you might need to get into the CLI and access the backend to do all the stuff you'd need to do though.
     

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