Hi, I wonder if anyone might be able to help me with opening port on Ubuntu Server 12.04. I have just finished installed apf (advanced policy firewall) and it's running as I'm writing this thread. I have already configured it so that it allows incoming and outgoing traffics on port 443. But when I checked to see what ports are opening on the server by running the command as follow -> netstat -ntulp I saw nothing is listening to port 443 there Here is the snapshot after restarting apf apf(3998): {glob} opening inbound tcp port 443 on 0/0 apf(3998): {glob} opening outbound tcp port 443 on 0/0 So I'm not sure what's more to do to make it so that I can access on port 443. Any help would be greatly appreciated. Thank you