[Swan] IPv6 implicit connection
Paul Wouters
paul at nohats.ca
Wed May 27 06:08:38 EEST 2015
On Tue, 26 May 2015, Brandon Enochs wrote:
> Isn't the subnet extraneous in that example since the right IP is fully specified?
the diagram is like:
[leftsubnet -[left] ----internet---[right]----[rightsubnet]
Your IPsec gateway IP's are left= and right=. If you are building a
tunnel that should cover more than just the gateways itself, so a
subnet to subnet tunnel, you need to specify that via leftsubnet=
and rightsubnet=
Remember IPsec tunnels are not virtual wires, you cannot just "route"
anything in to them. You need to tell exactly what src-dst of packets
are allowed to go through.
Paul
> On May 26, 2015 11:04 PM, "Paul Wouters" <paul at nohats.ca> wrote:
> On Tue, 26 May 2015, Brandon Enochs wrote:
>
> Are IPv6 host to host connections with right specified as a subnet supported?
>
>
> Yes, for example:
>
> ipsec.conf:
>
> conn ipv6
> left=2001:db8:1:2::45
> leftid="@west"
> right=2001:db8:1:2::23
> rightsubnet=2001:db8:0:2::/64
> rightid="@east"
> auto=ondemand
> authby=secret
>
> ipsec.secrets:
>
> 2001:db8:1:2::45 2001:db8:1:2::23 : PSK "secret"
>
> If your endpoints (left/right) are IPv4, and your subnet is IPv6, then
> you need a leftsubnet as well (with an ipv6 range) because both need to
> be of the same IP address family, and you need to add connaddrfamily=6
>
> Paul
>
>
>
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