how can i see what ports are open on my machine
If you'd like to have your computer remotely scanned for open ports use our Security Scan instead. To see a list of listening ports, open Command Prompt and type: netstat-an |find /i listening. You can change listening to established to see what ports your computer actually communicates with.It is also useful to use the-o switch with the NETSTAT command to also get a list of all the owning process ID associated with each connection.o see all open, closing, established and listening ports, simply use: netstat-a (or netstat-ao in XP/Win2k3). You can also make the netstat command refresh periodically by adding a number of seconds at the end, for example, to make it refresh every 5 seconds, use something like: