On Fri, 12 Jun 2020, Phil Nightowl wrote:
You must use ikev2=insist (on rhel/centos)
I'm on debian stable, but I guess this would be pretty much the same.
On upstream libreswan you can use either ikev2=yes or ikev2=insist.
Opportunistic only works with IKEv2.
You really must use %opportunisticgroup for the private connection.
Can you elaborate a little more on this? I admit I do not fully understand
the difference between %group and %opportunisticgroup. My point was that
- I actually do not need opportunistic encryption in my use case
(connecting hosts are known beforehand)
If you are not using a network mesh encryption setup, but you have
regular host-to-host or subnet-to-subnet tunnels, then you should
not be using anything with %group or %opportunisticgroup.
You would just be doing something like:
https://libreswan.org/wiki/Host_to_host_VPN
or
https://libreswan.org/wiki/Subnet_to_subnet_VPN_with_PSK
- supporting ikev1 (for a while) would make my life and the planned
transition somewhat easier
For static tunnels that is just a matter of adding ikev2=no although for
devices that want IKEv1, they usually also want outdated crypto
algorithms, so you might need a specific ike= and esp= line
If the above configs don't make sense for you, please share more details
about what you are trying to do.
Paul
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