And the problem is that these programs need to open specific ports to work.
And my question is, how do I know which program (antivirus, firewall etc) who's blocking and needs to open that ports?
And how can I open them?
And I wonder if there is some possiblility to check if particular ports are open or closed for Internettraffic?
If I can ping my own computer for particular ports to see if they are open or not?