SRC-Nat confused

RouterOS Beginner Basics
1

Hi,

I have a network 192.168.88.0/24.

I’ve established a VPN tunnel to a network 192.168.0.0/24 via L2TP.

Router/Devices on 192.168.88.0/24 are able to ping to the other side.

For beginners learning sake, I want to translate 192.168.200.0/24 as a 1:1 mapping to the IPs on 192.168.0.0/24 via the VPN via the 192.168.88.0/24 network.

So, if I ever encounter another 192.168.0.0/24 network connected via VPN I could then use 192.168.201.0/24 etc etc.

Would somebody be kind enough to explain how NAT works in this case along with some firewall/NAT rules. I don’t quite understand how the router picks up the packet, adjusts it, then moves it onto the VPN interface. A wonderful mystery! :slight_smile:

Thanks
Chris

2

https://help.mikrotik.com/docs/spaces/ROS/pages/328227/Packet+Flow+in+RouterOS

3

Your trying to stuff a pre-conceived solution for an unknown problem into the MT, the worst way to proceed.
Suggest you detail the USER TRAFFIC requirements, the use-cases that are driving your request.

It may very well be that other tools and methods make sense.