10-08-2012
A socket can be in various states (bound to an address/port, unbound, listening, idle, etc.)
Other than ESTABLISHED, here are some other possible states that netstat can output:
Quote:
BOUND Bound, ready to connect or listen.
UNBOUND Not waiting for anything,
CLOSED Closed. The socket is not being used.
CLOSING Closed, then remote shutdown; awaiting acknowledgment.
CLOSE_WAIT Remote shutdown; waiting for the socket to close.
FIN_WAIT_1 Socket closed; shutting down connection.
FIN_WAIT_2 Socket closed; waiting for shutdown from remote.
IDLE Idle, opened but not bound.
LAST_ACK Remote shutdown, then closed; awaiting acknowledgment.
LISTEN Listening for incoming connections.
SYN_RECEIVED Initial synchronization of the connection under way.
SYN_SENT Actively trying to establish connection.
TIME_WAIT Wait after close for remote shutdown retransmission.
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LEARN ABOUT OPENSOLARIS
unbound
unbound(8) unbound 1.4.17 unbound(8)
NAME
unbound - Unbound DNS validating resolver 1.4.17.
SYNOPSIS
unbound [-h] [-d] [-v] [-c cfgfile]
DESCRIPTION
Unbound is an implementation of a DNS resolver, that does caching and DNSSEC validation.
The available options are:
-h Show the version and commandline option help.
-c cfgfile
Set the config file with settings for unbound to read instead of reading the file at the default location,
/etc/unbound/unbound.conf. The syntax is described in unbound.conf(5).
-d Debug flag, do not fork into the background, but stay attached to the console. This flag will also delay writing to the logfile
until the thread-spawn time. So that most config and setup errors appear on stderr.
-v Increase verbosity. If given multiple times, more information is logged. This is in addition to the verbosity (if any) from the
config file.
SEE ALSO
unbound.conf(5), unbound-checkconf(8).
AUTHORS
Unbound developers are mentioned in the CREDITS file in the distribution.
NLnet Labs May 24, 2012 unbound(8)