SS with netstat command view connection common status

LISTEN

Listening for connection requests from a remote TCP port

Syn-sent

Wait for a matching connection request after sending a connection request

Syn-received

Wait for confirmation of the connection request after receiving and sending a connection request

Established

Represents an open connection

Fin-wait-1

Waiting for a remote TCP connection to interrupt the request, or the acknowledgement of a previous connection interrupt request

Fin-wait-2

Waiting for connection interrupt request from remote TCP

Close-wait

Waiting for a connection interrupt request from a local user

CLOSING

Wait for the remote TCP acknowledgement of the connection interruption

Last-ack

Acknowledgement of the connection interrupt request waiting for the original send to remote TCP

Time-wait

Wait enough time to ensure that the remote TCP receives a connection interrupt request acknowledgement

CLOSED

No connection Status

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SS with netstat command view connection common status