On Mac OS X how can I monitor what is using my internet connection?
Solution 1:
Little Snitch lets you grant Internet access to programs selectively, so you can decide what port numbers and hostnames an app is allowed to talk to.
It is a very handy personal firewall, and one of the first thing I'd install on a new Mac. Preventing apps from phoning home or doing whatever on the Internet can be crucial for the privacy-minded.
Solution 2:
How about iftop? Get via:
- MacPorts
- HomeBrew
- precompiled at AFP548