The Image is just for explanation, I just want to know the config to my CPE2 and mikrotik to access my server from PC1
Thanks in advance,

The Image is just for explanation, I just want to know the config to my CPE2 and mikrotik to access my server from PC1
Thanks in advance,

Hi
I would suggest to port-forward traffic on CPE2 to the RB, and then preferably setup a vpn on that port on Mikrotik, which you could then connect to from your pc.