Date: Fri, 7 Dec 2012 11:06:56 +0100 From: Luigi Rizzo <rizzo@iet.unipi.it> To: "Finlayson, James" <jmfinla@lps.umd.edu> Cc: "freebsd-ipfw@freebsd.org" <freebsd-ipfw@freebsd.org> Subject: Re: Linux ipfw sysctl equivalents Message-ID: <20121207100656.GB32402@onelab2.iet.unipi.it> In-Reply-To: <3E9C7E247905FE44A1556F1E7B959E7604C4D23768@cec-exch.cec.lps.gov> References: <3E9C7E247905FE44A1556F1E7B959E7604C4D23768@cec-exch.cec.lps.gov>
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On Thu, Dec 06, 2012 at 10:03:00AM -0500, Finlayson, James wrote: > Hi, > I'm trying to build a dummynet box on linux (Centos 6.3). I have a bridge created that properly forwards packets, however I cannot seem to alter their behavior with ipfw pipes. I've used dummynet on FreeBSD without issue, but I can't seem to find a Linux equivalent to the following two sysctl commands that will allow me to send bridged packets through ipfw. > > net.link.ether.ipfw: 0 > Controls whether layer-2 packets are passed to ipfw. Default is > no. > > net.link.bridge.ipfw: 0 > Controls whether bridged packets are passed to ipfw. Default is > no. there is no equivalent, the dummynet version on linux only works at layer3 (attached to the pfilter hooks). Probably it can be made to work at a lower layer but i am not sure how. Other FreeBSD sysctl are remapped to /sys/module/ipfw_mod/parameters/* and accessible with regular filesystem read/write calls cheers luigi
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