It doesn't work like this in the real world. There isn't some magic port that just lets you bypass the firewall. Certain ports sometimes have laxer filtering/r

It doesn't work like this in the real world. There isn't some magic port that just lets you bypass the firewall. Certain ports sometimes have laxer filtering/restrictions, for example 53, 80, and 443 - but you already know these in advance. You aren't going to find out that port 18741 magically gets you an unrestricted internet connection.