Is this possible with pfsense
192.168.1.10 - server
Router in Production Environment have static route to 10.10.10.0/24 gw 10.10.10.1
Host 192.168.1.100 -> 10.10.10.10 (pfSense) -> 192.168.1.10 (behind pfSense)
192.168.1.10 -> 10.10.10.1 (pfSense) -> 192.168.1 gw LAN production -> WAN Production
Core router LAN 192.168.1.0/24
I'm not sure I understand the scenario. Is there both some other core router with 192.168.1.0/24 and a pfSense router with 192.168.1.0/24 behind it?
Maybe use https://app.diagrams.net/ and draw your scenario
A host at 192.168.1.100 trying to get to 192.168.1.10 is not going to reach out to it's default gateway, those 2 devices are in the same subnet.
Two places, the production environment and the sandbox environment
In both places there are (mirrored) servers with the same IP addresses on the network cards
I need communication to and from the sandbox environment with the preservation of IP addresses on both sides (servers)
@dzinks You'd need two pfSense routers connected via their WAN interface.
192.168.1.0/24 can't exist on the same router with different interfaces.
You'd need to do a 1:1 NAT on both routers with different addresses poining to 192.168.1.0 for Production and Sandpit.