AFAIK both IPSEC and OpenVPN can handle a 1:1 NATTING.
The NethServer GUI in Cockpit does not have any options for the above scenario, which is way beyond what a normal SME (Small / Medium Enterprise) would need.
As such, it would be far easier to allow the 192.168.1.0/24 network to access the 10.10.0.0/24 network. This could be done in the GUI of NethServer within 5 minutes…
What needs to be done on the other side I cannot say, as I have no information about the other side, or why do you need to use 1:1 NAT, which is VERY unusual!
You can do 1:1 NAT by hand, eg: doing your own config files, but it is not something for a quick 5 minute job or the faint of heart! I’d say you’ld be more or less on your own from here, as most people have never used this!
I’d suggest evading 1:1 NAT if anyway possible!
My 2 cents