<strong>sudo lsof -i -P -n</strong>
COMMAND       PID            USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
systemd         1            root  208u  IPv4      17471      0t0  TCP *:111 (LISTEN)
systemd         1            root  211u  IPv4      17472      0t0  UDP *:111
systemd         1            root  212u  IPv6        928      0t0  TCP *:111 (LISTEN)
systemd         1            root  213u  IPv6      16625      0t0  UDP *:111
rpcbind       745            _rpc    4u  IPv4      17471      0t0  TCP *:111 (LISTEN)
rpcbind       745            _rpc    5u  IPv4      17472      0t0  UDP *:111
rpcbind       745            _rpc    6u  IPv6        928      0t0  TCP *:111 (LISTEN)
rpcbind       745            _rpc    7u  IPv6      16625      0t0  UDP *:111
systemd-n     825 systemd-network   15u  IPv4 1107711789      0t0  UDP 192.168.50.90:68
etcd          953            etcd    5u  IPv4      31276      0t0  TCP 127.0.0.1:2380 (LISTEN)
etcd          953            etcd    6u  IPv4      31278      0t0  TCP 127.0.0.1:2379 (LISTEN)
etcd          953            etcd   11u  IPv4      34676      0t0  TCP 127.0.0.1:56316->127.0.0.1:2379 (ESTABLISHED)
etcd          953            etcd   12u  IPv4      32361      0t0  TCP 127.0.0.1:2379->127.0.0.1:56316 (ESTABLISHED)
container     959            root   14u  IPv4      31989      0t0  TCP 127.0.0.1:43127 (LISTEN)
sudo lsof -i -P -n