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Exclude Mac addres

Discussion in 'Tomato Firmware' started by karekiu, May 26, 2007.

  1. karekiu

    karekiu LI Guru Member

    hello everyone,

    is it possible to exclude a certain mac address from being assigned an ip address using tomato latest version? it is an ethernet attached device.

  2. snwbdr

    snwbdr Network Guru Member

    Unplug it. Ha ha just kidding, but seriously. You can block all internet access of a wired computer using access restrictions. Just set your rule to block all internet access from the following and set the mac address. If you want to block all routing then unplug it. I am not sure if there is any other way.

    If it was wireless you could set up your wireless client filter to block the following clients then type in the mac address. But not wired connections.

    Not sure why you would need to block a computer you physically plugged in, but maybe with more info someone can help. You can block the internet access but not sure about the routing. You just want a computer plugged into your router but not recognized? no IP Addess right?
  3. snwbdr

    snwbdr Network Guru Member

    You could set it to static instead of DHCP server. Just uncheck DHCP server. But then you would have to manually assign every computer that you want an IP Address assigned to.
  4. mraneri

    mraneri LI Guru Member

    Along the lines of the other posters, what are you trying to accomplish?
    Would a static IP configuration work? Are you trying to restrict what it can communicate with? Is it a PC or some other device?

    If you want to block some network resource, access restrictions are probably the way.

    If you want DHCP to fail for this device, you can probably find out the port that is used for DHCP and block just that port from that MAC address...

    Or pull the plug.. I'm sure you have a good reason for needing to block IP assignment, but this is unusual for a wired client. More explanation will help us provide a more relevant response.

    - Mike
  5. karekiu

    karekiu LI Guru Member

    Thanks everyone for the quick responses!

    I wanted to avoid disabling the dhcp on the router at all cost. My setup works with static ip addressing. I have a network with 6 pc's, I dont want the router to assign an ip address to a mediamvp device, as I have a dhcp server software and tftp server running on one of the pc's specifically setup to serve the mediamvp its ip address and to load its operating system on it.

    I have tried access restriction on the router, checking off block all internet access, and I have also blocked using the wireless filter setting, but somehow, the router is still giving the mediamvp an ip address.

    my setup is pretty much what listed here

    Once again thanks everyone!
  6. mraneri

    mraneri LI Guru Member

    So, the trick is that there is a DHCP server running on a windows box, and this device needs to get it's IP address from IT, and not your router...

    Can you setup the Windows box to provide the DHCP addresses for all the devices on the network or just the MediaMVP?
  7. dvaskelis

    dvaskelis Network Guru Member

    Can you help us out with why? It sounds like you want to have *two* competing DHCP servers (the Tomato router and your Windows box) on the same subnet. Why not just make your Windows box your one and only DHCP server?

    One way to have two competing DHCP servers is to properly isolate the two networks as two different subnets, each with their own DHCP server.

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