Date: Thu, 01 May 2014 00:02:57 +0800 From: bycn82 <bycn82@gmail.com> To: Freddie Cash <fjwcash@gmail.com> Cc: "freebsd-ipfw@freebsd.org" <freebsd-ipfw@freebsd.org> Subject: Re: feature of `packet per second` Message-ID: <53611EB1.4000406@gmail.com> In-Reply-To: <CAOjFWZ4zRUmcjG-r--OqoGEWcSZoWhtTykgAAHzCjoEWsMVS9g@mail.gmail.com> References: <5360F1F4.9060808@gmail.com> <5361105C.1040203@freebsd.org> <53611738.8010103@gmail.com> <CAOjFWZ4zRUmcjG-r--OqoGEWcSZoWhtTykgAAHzCjoEWsMVS9g@mail.gmail.com>
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On 4/30/14 23:45, Freddie Cash wrote: > On Wed, Apr 30, 2014 at 8:31 AM, bycn82 <bycn82@gmail.com > <mailto:bycn82@gmail.com>>wrote: > > On 4/30/14 23:01, Julian Elischer wrote: > > On 4/30/14, 8:52 PM, bycn82 wrote: > > Hi > > `packet per second` it is easy to be implemented using > iptables, there is a module named `recent`, but in using > ipfw, Do we have any solution to fulfill it? check the > link below > https://forums.freebsd.org/viewtopic.php?f=44&t=42933&p=258441#p258441 > <https://forums.freebsd.org/viewtopic.php?f=44&t=42933&p=258441#p258441> > > > since I don't use linux.. what is "packet per second"?.. does > it report it or set a limit on it? > > > bycn82 > > _______________________________________________ > freebsd-ipfw@freebsd.org <mailto:freebsd-ipfw@freebsd.org> > mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw > To unsubscribe, send any mail to > "freebsd-ipfw-unsubscribe@freebsd.org > <mailto:freebsd-ipfw-unsubscribe@freebsd.org>" > > > > > Yes, "Packets Per Second"means limit a connection based on the > packets number, for example, If I allow 2 ICMP packets come to my > server in each individual second. only the first 2 packets will > be allow, all others in the same second will be dropped. > > > For ICMP, specifically, there's a sysctl to control the rate (per > second): > > # sysctl -d net.inet.icmp.icmplim > net.inet.icmp.icmplim: Maximum number of ICMP responses per second > > > For everything else, you'd want to use dummynet(4). > > -- > Freddie Cash > fjwcash@gmail.com <mailto:fjwcash@gmail.com> Thanks for your reply, and it is good to know the sysctl for ICMP. finally it works.I just added a new `action` in firewall and it is called `pps`, that means it can be generic purpose while the net.inet.icmp.icmplim is only for ICMP traffic. the usage will be like below root@F10:/usr/src/sbin/ipfw # .*/ipfw add pps 1 icmp from any to any* 00100 pps 1 icmp from any to any root@F10:/usr/src/sbin/ipfw # ./ipfw show 00100 9 540 pps 1 icmp from any to any 65535 13319 1958894 allow ip from any to any root@F10:/usr/src/sbin/ipfw # regards, bycn82
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