ss command within Linux

The ss (socket statistics) command provides information by displaying details on socket activity.  Some command line switch examples would be:

ss -ta dumps all TCP socket

ss -ua dumps all UDP sockets

ss -wa dumps all RAW sockets

ss -xa dumps all UNIX sockets

ss -4a dumps all IPV4 sockets

ss -6a dumps all IPV6 sockets

ss –lt displays only listening sockets

ss-ltn displays the same data with port numbers

ss-t displays established TCP connections

https://www.networkworld.com/article/3327557/linux/using-ss-to-examine-network-connections.html