How to see VPN connection statistics?
Nothing as nice and easy as Windows provides, however you can get the info you require if you enable verbose logging on your PPTP connection:


Open System Preferences → Network.
Select your your VPN service from the list of services on the left.
Click Advanced….


Then tick Use verbose logging and click OK, then Apply.


In Terminal, run the following command:

tail -f /var/log/ppp.log