X-NetStat 6.0 Documentation


Last Revised: May 2021

Copyright © 1998-2021 Fresh Software LLC

Netstat status codes

A TCP connection can have one of 12 states, given by a code word.

 

CLOSED

The connection is disconnected and not being used

LISTEN

Your computer is waiting for an incoming connection. This is an open port.

SYN_SENT

Actively trying to establish connection

SYN_RECEIVED

Initial synchronization of the connection under way, about to connect

ESTABLISHED

Connection has been established, connection is active

CLOSE_WAIT

Remote shut down: waiting for the socket to close

FIN_WAIT_1

Socket closed, shutting down connection

CLOSING

Closed, then remote shutdown: awaiting acknowledgement. Attempting to shut down connection

LAST_ACK

Remote shut down, then closed: awaiting acknowledgement

FIN_WAIT_2

Socket closed, waiting for shutdown from other computer

TIME_WAIT

Wait after close for remote shutdown retransmission

TCB_DISCARD

TCP connection control block discarded