NETWORK_STATE (ss -ntulop):
Netid State  Recv-Q Send-Q Local Address:Port Peer Address:Port Process
tcp   LISTEN 0      128    0.0.0.0:80         0.0.0.0:* users:(("nginx",pid=842,fd=6))
tcp   LISTEN 0      128    0.0.0.0:443        0.0.0.0:* users:(("nginx",pid=842,fd=7))