default@debian:~$ sudo netstat -pln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      801/sshd
tcp        0      0 127.0.0.1:39963         0.0.0.0:*               LISTEN      1074/sshd: anonymou
tcp6       0      0 :::22                   :::*                    LISTEN      801/sshd
udp        0      0 0.0.0.0:68              0.0.0.0:*                           451/dhclient