I am Beginner and trying to create a home Ubuntu server from a old PC. The server is working fine but when I am trying to connect through ssh I am able to from local network. But when I tried to login from outside my router network I am unable to connect. I tried to add port forwarding in my router my router by default have the static IP. I am not sure where is the issue.

I’m trying to do a learning experiment with linux bridges. I wan’t to create an isolated bridge on host without namespaces with the ability to debug interface connectivity.
Setup