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Blocking Broadcasts

Discussion in 'Tomato Firmware' started by astrakid, Mar 3, 2011.

  1. astrakid

    astrakid Networkin' Nut Member

    first of all: i have only some minor network knowledge from the past.

    my environment: i have a small network with a laptop used as a server. since i am going to use it every now and then (usually once or twice a day) it will change to standby after some idle time. up to here everything is fine.

    now my problem: nearly everytime a device is requesting its ip-address via dhcp from my linksys WRT54G running tomato 1.28, the server wakes up. From my opinion this is a usual behaviour, because the broadcast of dhcp-request will be forwarded to the server as well, which wakes up because of network activity on NIC (it is configured this way). this is what i want to avoid.

    is there anything i can configure to realize this? i have only one solution in my mind: VPNs. but this is something i have not much knowledge of, and it is not configurable via webinterface and so i am a bit reluctant for this solution...

    has anyone another hint for me?

    kind regards and thanks in advance!
  2. rhester72

    rhester72 Network Guru Member

    Set your server to wake-on-LAN only if the magic packet is received, not all network traffic.

  3. TT76

    TT76 Networkin' Nut Member

    Just look at your network adapter configuration in device manager, there is some settings on WOL.
  4. astrakid

    astrakid Networkin' Nut Member

    this is a way i know, but that is not the desired scenario, because in this case i need to explicitly wake up my server - this should be done by traffic really assigned to it (which is usually the case for unicast messages).
    it is overall working fine, only in case of a dhcp-broadcast (and only when my android-based mobile or my companies laptop requests an ip, but not when my satellite-receiver based on enigma1 or enigma2 request an ip) the server awakes even it is not needed.

    is there another way?


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