3
- lsof -i - all apps with active network connections
4
- lsof -i:80 - list apps listening on port 80
5
- lsof -iTCP -sTCP:ESTABLISHED - list apps with established TCP connections
9
- netstat -s - global statistics
10
- netstat -p - active connections with program names
11
- netstat -tup - established internet connections
12
- netstat -lantp - servers + established internet connections