Routing 2 IP adresses

Hello,

I don’t fully understand routeing so please if someone could help me.

I have configured my LAN adress 192.168.1.0/24 and for OVPN i use IP segment 10.3.100.0/24 (client is 10.3.100.10).

What is the best way to route/link IP segment 192.168.1.0/24 with 10.3.100.10 so that i could with the VPN client connect to the devices in the 192.168.1.0/24 segment? via IP-> route or IP->Firewall->NAT?

this will be enough

/ip firewall nat
 add chain=srcnat src-address=10.3.100.0/24 action=masquerade
 add chain=srcnat src-address=192.168.1.0/24 out-interface=ether1 action=masquerade

in the example ether1 is the Wan interface

I presume in out-interface i need to use VPN-server bonding or (i use RB4011) sfp?

Tried it several diferent ways but did not work. saw that some packages ware counted but could not connect to a computer.

Example:
i’m via phone on VPN: i get ip 10.3.100.10
want to connect to a server rdp on 192.168.1.25

if i change vpn to 192.168.1.x segment then i can access router via winbox but none of other devices in 192.168.1.x segment.