.\"   $OpenBSD: identd.8,v 1.3 2013/03/18 17:09:11 jmc Exp $
.\"
.\" Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
.\"
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.Dd $Mdocdate: March 18 2013 $
.Dt IDENTD 8
.Os
.Sh NAME
.Nm identd
.Nd Identification Protocol daemon
.Sh SYNOPSIS
.Nm
.Op Fl 46d
.Op Fl l Ar address
.Op Fl p Ar port
.Op Fl t Ar timeout
.Ar directory
.Sh DESCRIPTION
.Nm
is a server which implements the Identification Protocol as specified in
RFC 1413.
.Pp
.Nm
operates by looking up specific TCP/IP connections and returning
the name of the user running the process responsible for the connection.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl 4
Forces
.Nm
to use IPv4 addresses only.
.It Fl 6
Forces
.Nm
to use IPv6 addresses only.
.It Fl d
Do not daemonize.
If this option is specified,
.Nm
will run in the foreground and log to stderr.
.It Fl l Ar address
Listen on the specified address.
By default
.Nm
listens on wildcard addresses.
.It Fl p Ar port
Listen on the specified port.
By default
.Nm
listens on the port indicated in the
.Ql auth
service description; see
.Xr services 5 .
.It Fl t Ar timeout
Specifies the idle timeout for client connections,
in seconds.
The default timeout is 120 seconds.
.El
.\" .Sh SEE ALSO
.Sh STANDARDS
.Rs
.%A M. St. Johns
.%D February 1993
.%R RFC 1413
.%T Identification Protocol
.Re
.Sh HISTORY
The
.Nm
command was originally a process run via
.Xr inetd 8 .
It was rewritten for
.Ox 5.4
as a persistent non-blocking daemon.