What’s running on port XXXX?

Here are a couple of simple scripts to allow you to find out what’s running on any port on your machine.

On Windows

netstat -a -n -o
tasklist /svc /FI "PID eq 2844"

2844 should be replaced with whatever your process ID is.

On Linux

sudo apt-get install lsof; lsof -iTCP:80

TCP can be either “TCP” or “UDP”
80 should be replace with the port number you’re interested in