IP Forwarding

Greetings.

Right now I have a working connection via a CISCO router which is managed by my ISP. I want to put a MikrotikOS in the middle of my network and that router so I can manage traffic. I have two interfaces which first one is still connected to the original network and the second one is the one I will use for my “internal net” (as you can see both of them are internat). I’ve tried to configure nat; forward at firewall configuration, modified rules in ip route, but haven’t being able to forward IP.
Any clue would be appreciated. Thanks in advance.

RouterOS by default forwards traffic out of the box.

Post a network diagram and the configuration you applied.

Greetings.
What I did was just to masquarade NAT, everything is working now. Thanks a lot.