you do sudo apt-get install ntop
Then after it starts (by /etc/init.d/ntop start )
then you run this:
netstat -tulpn | grep :3000
Then open a web page on the local computer and http://localhost:3000
or use another machine and type the IP for the host machine :3000

I got it to work.

Is dconf the program that can be shown on port 3000 using web browser?
like http://localhost:3000
or was it another program?
I lost my mark…now I cannot find or think of the command!