Date: Sat, 24 Nov 2012 17:44:30 +1100 From: Morgan Reed <morgan.s.reed@gmail.com> To: Dewayne Geraghty <dewayne.geraghty@heuristicsystems.com.au>, freebsd-stable@freebsd.org Subject: Re: natd in a jail Message-ID: <CAKnh_Yt4TiPEgdaZQ0J=meKDP_WiUWgUwodEMBqdzCNBNcOAHQ@mail.gmail.com> In-Reply-To: <CAKnh_YteQ8YO5HFWGeFNgZqBx6-EK0BX7uujnAoqLi-JJ-yk_g@mail.gmail.com> References: <CAKnh_YtF5f_0-vuGO0ov%2BJDKa_gxF%2Bf80-DCcfxPYyew0_ZG7Q@mail.gmail.com> <D0670FDB8ED04E92BD4A44BB347E786F@white> <CAKnh_YtaY8uMo0W=LQ8L=Ntz6j9bVv8bOkQ_xFoAtz86qLZKDA@mail.gmail.com> <CAKnh_YteQ8YO5HFWGeFNgZqBx6-EK0BX7uujnAoqLi-JJ-yk_g@mail.gmail.com>
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On Fri, Nov 23, 2012 at 5:16 PM, Morgan Reed <morgan.s.reed@gmail.com> wrote: > So it turns out I'd not bought bpf into the jails, however even with > that and raw_sockets enabled I'm still having no joy with natd. > > I've been looking at ipfw a bit today but I've run into an issue, > loading ipfw_nat causes my kernel to instantly panic, I need to > recompile with KDB and DDB turned on so I can actually catch the trace > though... Might look at netgraph before going too far down that path. Rebuilt the kernel with option IPFIREWALL and friends turned on (including IPFILTER_DEFAULT_TO_ACCEPT or whatever it is). Throw ipfw_nat_load="YES" and ipdivert_load="YES" into /boot/loader.conf so the modules are available for the jails. Run a quick and dirty ipfw script (running out of an 'up' script I wrote into the OpenVPN config); ipfw nat 1 config if tun0 reset same_ports deny_in ipfw add 500 nat 1 ip from any to any via tun0 Works like a charm, just one last thing I'd like to get squared away here though, currently OpenVPN is using a dynamically created tun device, I'd like to have a static /dev/tun0 exist prior to the /etc/rc.d/natd start launching (because as it is I have to restart natd after the openvpn tunnel comes up), not sure what the best way to achieve this is in a jailed environment though. The next trick will be migrating from my spaghetti script into rc launched jails...
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