netstat

State Description
LISTEN accepting connections
ESTABLISHED connection up and passing data
SYN_SENT TCP; session has been requested by us; waiting for reply from remote endpoint
SYN_RECV TCP; session has been requested by a remote endpoint for a socket on which we were listening
LAST_ACK TCP; our socket is closed; remote endpoint has also shut down; we are waiting for a final acknowledgement
CLOSE_WAIT TCP; remote endpoint has shut down; the kernel is waiting for the application to close the socket
TIME_WAIT TCP; socket is waiting after closing for any packets left on the network
CLOSING TCP our socket is shut down; remote endpoint is shut down; not all data has been sent
FIN_WAIT1 TCP; our socket has closed; we are in the process of tearing down the connection
FIN_WAIT2 TCP; the connection has been closed; our socket is waiting for the remote endpoint to shut down