we can see the ports using the Netstat -tulpn, e.g netstat -tulpn |grep program. But what is there is program that has multiple modules dependent on main program. How we will know what ports are they ...
I am doing a VPN access using openvpn utility to connect to my private network. However I cannot use my SIP soft-phone service (which uses a private domain) even if I am connected to that private ...
Is there a way to block certain programs from being able to connect to the internet in Debian (a firewall blocking outgoing connections), so for example, to block a windows program running in wine ...