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Disabling NAT

Discussion in 'Tomato Firmware' started by nsumner, May 13, 2007.

  1. nsumner

    nsumner LI Guru Member

    I want to use a Linksys WRT54G as a backup for a Cisco 1841 router. It seems to me in truth that there should be enough power to do the job.

    I have a couple concerns.

    Firstly we do not want NAT on the connection. We have a NAT device later on in the network and therefore I need to disable NAT. Can I do this using Tomato (is that what Router instead of gateway mode is).

    I can strip the machine down pretty good no wireless, no QoS etc to free up resources. How many sessions can I set it to handle? As well what changes should I probably make on the conntrack page?

    Thanks for all your help.
  2. GeeTek

    GeeTek Guest

    If you plan to disable wireless and nat, what are you wanting the device to accomplish for your network ?
  3. nsumner

    nsumner LI Guru Member

    Plain old router.

    Our network is like this:

    We have 3 offices each with their own subnet (192.168.x.0/24).

    Each of these offices is connected to our ISP via a router (which has a real IP), where they are connect to an MPLS. The MPLS is in addition connected to a firewall which does NAT for connections going to the internet.

    Since I dont' want to NAT before I hit the firewall, I don't want NAT on this device. It is purely a router between 2 networks.
  4. digitalgeek

    digitalgeek Network Guru Member

    I agree with GeeTek... if you don't want NAT or WiFi... what are using the WRT for?
  5. GeeTek

    GeeTek Guest

  6. dvaskelis

    dvaskelis Network Guru Member

  7. ifican

    ifican Network Guru Member

    Yes simple put it in router mode and disable the wireless, you can then run it like an other router. Though as you stated, i would only use it as a backup in an emergency while the 1841 was being replaced.

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