My aim is to backup my Office PC (behind public IP) to Home PC (behind public IP) over the internet.
The solution I am currently considering is to use
My network configuration is given bellow.
I have read some blogs regarding making the computer using public IP accessible via the Internet. One of the solutions they have is to use port forwarding. There they mentioned forwarding the port on my home router. What about the ISP router? I do not have access to the ISP router. How port forwarding is supposed to work here?