I have Avast Premium installed on 3 laptop computers ( 2 Dell & 1 HP). On one Dell Laptop Avast keeps informing me of a Network Port Forwarding potential hazard. No Network notifications warnings on the other Dell and HP laptops. I checked my router settings and confirmed that Port Forwarding has NOT BEEN IMPLEMENTED and Port Forwarding is NOT Present! Assistant urgently needed.
I’m not sure I can help with this, not something that I’m familiar with, but a screenshot or detailed text might help others to resolve.
Something you have connected to the internet may unknown to you may use port forwarding in the reply.
I don’t know if this example might show that:
Example of Port Forwarding