Date: Mon, 17 Nov 2008 14:06:30 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: "Jin Guojun[VFF]" <jguojun@gmail.com> Cc: Erik Trulsson <ertr1013@student.uu.se>, ipfw@freebsd.org, questions@freebsd.org Subject: Re: some ipfw filter does not function under Release 6.3 Message-ID: <20081117134532.S70117@sola.nimnet.asn.au> In-Reply-To: <4920C685.1050004@gmail.com> References: <491F413A.4020108@gmail.com> <20081115223556.GA45503@owl.midgard.homeip.net> <491F54A0.9090702@gmail.com> <491F6466.40309@gmail.com> <20081116224655.J70117@sola.nimnet.asn.au> <4920C685.1050004@gmail.com>
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On Sun, 16 Nov 2008, Jin Guojun[VFF] wrote: > Ian Smith wrote: > > > On Sat, 15 Nov 2008, Jin Guojun[VFF] wrote: > > > > > I think this is a bug in ipfw because after change the rule order, the > > > problem persists: > > > 00566 26 3090 deny ip from 221.192.199.36 to any > > > 65330 2018 983473 allow tcp from any to any established > > > 65535 0 0 deny ip from any to any > > > > Are you saying that the packets shown below from 221.192.199.36 arrived > > =after= you added rule 566, which denys all traffic from that address? > > > > Are you showing us your entire ruleset; it is just those three rules? > > > > Is the tcpdump shown running on the same box as ipfw, or another box? > > If another box, how is it connected through the firewall, to the net? > > > > Which machine performs NAT for your network? None of this is obvious. > > > > Please show output of 'ifconfig' and 'netstat -rn' on the ipfw box? > I have found the problem due to the NIC naming change after motherboard > upgrading. > The em0 was LAN port, but now it is WAN port. So, the following rule caused > Sync coming in: > > 00123 12 528 allow tcp from any to 192.168.0.0/16 via em0 setup Ahah! > This is my configuration fault, and we can close PR kern/128902. > > Thanks, > -Jin Glad you found it so soon, Jin; that was one very short-lived PR :) cheers, Ian
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