OPEN PORTS WITH NETSTAT
Network security is a critical issue for businesses because of the
potential for data theft, denial-of-service (DoS) attacks, and other
threats. Knowing the exposure level for a given computer will help
you better protect your machines.
The fewer ports open and listening on a computer, the less exposure
there is to attack and potential compromise of the system. You can
use the netstat program that comes with Windows to identify which
ports are open on a system and identify current connections.
To identify ports, open a command console and type the following command:
To view an IP address for local and remote addresses rather than host
names, add the -n switch:
If you only want to view active connections and not listening ports,
use the netstat command without any switches.