Yes, it seems that this thread ended up with yet another thread about software firewall. Avastfan1, please search the forum. There are quite a lot of threads about this topic.
Thanks for the tips. I have indeed already searched the forum’s firewall threads.
Unfortunately, I still cannot make up my mind which one to choose!!! 
Avastfan1
Haven’t we suggested a firewall before?
What kind of help you need to choose?