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 From:  "Michael Whitby" <m dot whitby at gmail dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Traffic shaping over VPN for VoIP?
 Date:  Fri, 19 May 2006 19:53:18 +0100
incidentally, will the same method work for firewall rules?

cheers

On 5/19/06, Michael Whitby <m dot whitby at gmail dot com> wrote:
>
> Marc,
>
> This is certainly interesting! I beleived that this was not possible due
> to comments received by other m0n0wall users so what you have said certainly
> makes me interested, I am in the same position as Josh and wish to have
> m0n0wall's at all sites in a star toplogy toa central office, all will be
> linked via IPSEC from the m0n0wall devices - it sounds like you are saying I
> can just use the traffic shaper perfectly as normal and apply all shaping
> rules to the WAN interface and this will shape the traffic inside the tunnel
> aswell as traffic not in the tunnel, therefore to distinguish between
> traffic in the tunnel and traffic outside of it I could just specify remote
> subnets in the rules so that only traffic destined to the other subnets gets
> matched?
>
> cheers,
> Michael
>
>
>
> On 5/19/06, Josh Simoneau <jsimoneau at lmtcs dot com> wrote:
> >
> > Marc,
> >
> > Thank you for you excellent reply. The VPN will be IPSEC
> > monowall-to-monowall in a star configuration connecting remote locations
> > to the central office with the SIP server. So it would seem that I can
> > do traffic shaping on the WAN interface. I believe my scenerio is much
> > like yours. Currently the site is using non-monowall devices that do not
> > support QoS and it is causing problems with voice quality. I wanted to
> > be sure the m0n0wall solution would work before convincing them to swap
> > out their equipment.
> >
> > Regards,
> > Josh Simoneau
> >
> > ________________________________
> >
> > From: Marc Fargas [mailto: telenieko at gmail dot com]
> > Sent: Thursday, May 18, 2006 5:53 PM
> > To: Josh Simoneau
> > Cc: m0n0wall at lists dot m0n0 dot ch
> > Subject: Re: [m0n0wall] Traffic shaping over VPN for VoIP?
> >
> >
> > Hi Josh,
> > You have some options here, If the VPN is handled between m0n0 and the
> > Internet OR it is an IPSec one, you can define your traffic shaping on
> > the WAN interface taking care of traffic on ports 5060 & 5004 to be
> > highest priority, and traffic going from or to the SIP proxy (It will
> > depend if your devices can re-invite or use random SDP/RTP ports)
> >
> > In case the VPN is done on the m0n0 box but is not IPSec you'll have to
> > get the shaping done on LAN because traffic on WAN will be inside the
> > VPN and therefore you won't be able to distinguish VoIP traffic from
> > other VPN traffic, take care that placing the shaping on the LAN
> > interface means that download/upload means the opposite of what it means
> >
> > on WAN (seen from m0n0).
> >
> > In case the VPN is done on the LAN by another device... you can only
> > "match" the VPN traffic as is on the traffic shaping without knowing if
> > it's VoIP or anything else.
> >
> > I'm not sure if m0n0 can match QoS fields (have no box at hand now to
> > look at), if it can you can 'tag' the packets on the device (if it
> > supports so) or on the VPN software (I think openvpn had the ability to
> > 'respect' the QoS on tunneled packets) that could help on case 3 above.
> >
> > Hope it helps a bit, on my case I'm in the first case of the list, IPSec
> > tunnels between some offices (fully-meshed) and SIP traffic between
> > them, traffic shaping is done on WAN on ports 5060 and 5004 as my
> > devices allow me to specify ports. And it works fine (I can start
> > massive downloads without downgrading the voice quallity).
> >
> > See you,
> > Marc.
> >
> >
> >
> > On 5/18/06, Josh Simoneau <jsimoneau at lmtcs dot com> wrote:
> >
> >         Greetings,
> >
> >         I wasn't able to get a definite answer searching through the
> > archives,
> >         maybe someone here can tell me if they have had success with
> > this. We
> >         want to put an VoIP server at one location, and then have two
> > remote
> >         locations connect to this over a VPN. Each location will have
> > its own
> >         private subnet. I want to ensure that m0n0wall is capable of
> > doing
> >         traffic shaping (is this considered QoS or is there something
> > special
> >         about traffic shaping that keeps it from using the QoS label?)
> > over the
> >         VPN connection so that voice calls remain the highest priority.
> > We will
> >         be using standard SIP stuff.
> >
> >         I have done many m0n0wall VPNs and many traffic shaping
> > configurations,
> >         but never traffic shaping over the VPN. I just want to be 100%
> > sure this
> >         will work before I move forward with the project.
> >
> >         Many Thanks,
> >         Josh Simoneau
> >         Inventor of Electricity
> >
> >
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> >
> >
> >
> >
> >
> >
>