Apple - OS X - List all active sockets
From netstat
's manual page:
The netstat command symbolically displays the contents of various network-related data structures. There are a number of output formats, depending on the options for the information presented. The first form of the command displays a list of active sockets for each protocol.
pse@Mithos:~$ netstat
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp4 0 0 localhost.8228 localhost.52662 ESTABLISHED
tcp4 0 0 localhost.52662 localhost.8228 ESTABLISHED
tcp4 0 0 192.168.1.30.52661 stackoverflow.co.https ESTABLISHED
tcp4 0 0 localhost.8228 localhost.52656 ESTABLISHED
tcp4 0 0 localhost.52656 localhost.8228 ESTABLISHED
tcp4 0 0 localhost.8228 localhost.52651 ESTABLISHED
...
Another way to do it is to use lsof
benefiting it shows the process that owns the sockets. Either combined with grep
:
sudo lsof -n -i | grep -e LISTEN -e ESTABLISHED
(just use -e WAIT
accordingly if you need it specifically), or with its own filtering based on TCP socket states:
sudo lsof -n -i -s TCP:LISTEN,ESTABLISHED
I know certain versions of netstat
show process with the -b
switch, but not the OSX/BSD one apparently...