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  1. #1
    Limit bandwidth using ipfw

    Member Since
    Apr 18, 2010
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    Limit bandwidth using ipfw
    Hello!
    I have a iMac aluminum and a 54mbps NetGear router that doesn't support QoS. I would really appreciate it if someone could guide me on how to limit bandwidth overall on my roommates PC. The ip address I see on my router for their computer is 192.168.1.4. I read on another forum that i could use this command in terminal:

    sudo ipfw pipe 1 config bw 300kbit/s
    sudo ipfw add pipe 1 dst-ip 0.0.0.0/0

    But i don't understand the dst-ip command

    would it be "sudo ipfw add pip 1 dst-ip 192.168.1.4/x" <---what goes after the slash and does this command really do what I'm asking for?

    I want them to have a fair share of the the internet but no more, so what is 18 percent of the 54 mbps router in kbit/s?

    I have tried searching on google for applications and clarification, but either my searches aren't clear enough or there isn't anything out there besides a router that supports QoS. Any ideas?

  2. #2
    Limit bandwidth using ipfw
    Aptmunich's Avatar
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    I think you would put /24 after the slash - that's shorthand for a "255.255.255.0" subnet mask.

  3. #3
    Limit bandwidth using ipfw

    Member Since
    Apr 18, 2010
    Posts
    3
    Quote Originally Posted by Aptmunich View Post
    I think you would put /24 after the slash - that's shorthand for a "255.255.255.0" subnet mask.
    Thanks for the tip. would you know what a 54mbps speed router is converted to if i was to set a speed limit in kbit/s ? and will this command limit only my roommates speed or everyone that is connected to the router?

  4. #4
    Limit bandwidth using ipfw
    MacsWork's Avatar
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    May 22, 2005
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    You can't limit the bandwidth of a any machine besides yours with that command.

    Buy a router with QoS.

    But if your roommate pays half the bills try having a conversation with them first.

  5. #5
    Limit bandwidth using ipfw

    Member Since
    Apr 18, 2010
    Posts
    3
    Quote Originally Posted by MacsWork View Post
    You can't limit the bandwidth of a any machine besides yours with that command.

    Buy a router with QoS.

    But if your roommate pays half the bills try having a conversation with them first.
    Thanks for clearing that up. They're fine with having a bw limiter installed on their computer as long as it's set to a fair share. Do you know any windows vista 32bit bw limiting applications that are fairly simple to use?

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