tinc vpn - node to node communication

[Yazeed Fataar]

Understood, thanks for clarification as always Guus!

Regards
Yazeed Fataar
<yazeedfataar at hotmail.com>

On Mon, Feb 22, 2016 at 5:48 PM, Guus Sliepen <guus at tinc-vpn.org> wrote:

> On Mon, Feb 22, 2016 at 05:41:05PM +0300, Yazeed Fataar wrote:
>
> > Ok I have a simple lab setup with three nodes , one acting as the
> "Central
> > Node" and the other two as remote nodes which "*ConnectTo*" the central
> > node in order to be able to communicate with each other.
> >
> > What I would like to know is , once the tinc remote nodes establish a
> > connection to the "Central Node" , my understanding was that if the
> remote
> > nodes want to communicate with each other the data traffic will be
> flowing
> > through the central node. When I did a tcpdump on central node (both tun0
> > and eth0) interfaces I cannot see the ICMP traffic on central node ?!?
> How
> > does tinc pass the data traffic without the central node... hopefully not
> > by MAGIC :) ...
>
> If the remote nodes want to communicate with each other, then if
> possible they will do so directly without going through the central
> node. However, if that is not possible for some reason (because of NAT
> for example), then it will go via the central node. But in that case,
> the tinc daemon on the central node will handle the forwarding
> internally, you will not see those packets when you run tcpdump on the
> central node's tun0 or eth0 interfaces (but if you set Forwarding =
> kernel on the central node, then you will see the packets on tun0).
>
> --
> Met vriendelijke groet / with kind regards,
>      Guus Sliepen <guus at tinc-vpn.org>
>
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>
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