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-.\" $NetBSD: rlogin.1,v 1.3 1995/03/21 07:58:37 cgd Exp $
-.\"
-.\" Copyright (c) 1983, 1990, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)rlogin.1 8.1 (Berkeley) 6/6/93
-.\"
-.Dd June 6, 1993
-.Dt RLOGIN 1
-.Os BSD 4.2
-.Sh NAME
-.Nm rlogin
-.Nd remote login
-.Sh SYNOPSIS
-.Ar rlogin
-.Op Fl 8EKLdx
-.Op Fl e Ar char
-.Op Fl k Ar realm
-.Op Fl l Ar username
-.Op Fl p Ar portnumber
-.Ar host
-.Sh DESCRIPTION
-.Nm Rlogin
-starts a terminal session on a remote host
-.Ar host .
-.Pp
-.Nm Rlogin
-first attempts to use the Kerberos authorization mechanism, described below.
-If the remote host does not supporting Kerberos the standard Berkeley
-.Pa rhosts
-authorization mechanism is used.
-The options are as follows:
-.Bl -tag -width flag
-.It Fl 8
-The
-.Fl 8
-option allows an eight-bit input data path at all times; otherwise
-parity bits are stripped except when the remote side's stop and start
-characters are other than
-^S/^Q .
-.It Fl E
-The
-.Fl E
-option stops any character from being recognized as an escape character.
-When used with the
-.Fl 8
-option, this provides a completely transparent connection.
-.It Fl K
-The
-.Fl K
-option turns off all Kerberos authentication.
-.It Fl L
-The
-.Fl L
-option allows the rlogin session to be run in ``litout'' (see
-.Xr tty 4 )
-mode.
-.It Fl d
-The
-.Fl d
-option turns on socket debugging (see
-.Xr setsockopt 2 )
-on the TCP sockets used for communication with the remote host.
-.It Fl e
-The
-.Fl e
-option allows user specification of the escape character, which is
-``~'' by default.
-This specification may be as a literal character, or as an octal
-value in the form \ennn.
-.It Fl k
-The
-.Fl k
-option requests rlogin to obtain tickets for the remote host
-in realm
-.Ar realm
-instead of the remote host's realm as determined by
-.Xr krb_realmofhost 3 .
-.It Fl x
-The
-.Fl x
-option turns on
-.Tn DES
-encryption for all data passed via the
-rlogin session.
-This may impact response time and
-.Tn CPU
-utilization, but provides
-increased security.
-.It Fl D
-Use the TCP nodelay option (see setsockopt(2)).
-.It Fl p portnumber
-Specifies the port number to connect to on the remote host.
-.El
-.Pp
-A line of the form ``<escape char>.'' disconnects from the remote host.
-Similarly, the line ``<escape char>^Z'' will suspend the
-.Nm rlogin
-session, and ``<escape char><delayed-suspend char>'' suspends the
-send portion of the rlogin, but allows output from the remote system.
-By default, the tilde (``~'') character is the escape character, and
-normally control-Y (``^Y'') is the delayed-suspend character.
-.Pp
-All echoing takes place at the remote site, so that (except for delays)
-the
-.Nm rlogin
-is transparent.
-Flow control via ^S/^Q and flushing of input and output on interrupts
-are handled properly.
-.Sh KERBEROS AUTHENTICATION
-Each user may have a private authorization list in the file
-.Pa .klogin
-in their home directory.
-Each line in this file should contain a Kerberos principal name of the
-form
-.Ar principal.instance@realm .
-If the originating user is authenticated to one of the principals named
-in
-.Pa .klogin ,
-access is granted to the account.
-The principal
-.Ar accountname.@localrealm
-is granted access if
-there is no
-.Pa .klogin
-file.
-Otherwise a login and password will be prompted for on the remote machine
-as in
-.Xr login 1 .
-To avoid certain security problems, the
-.Pa .klogin
-file must be owned by
-the remote user.
-.Pp
-If Kerberos authentication fails, a warning message is printed and the
-standard Berkeley
-.Nm rlogin
-is used instead.
-.Sh ENVIRONMENT
-The following environment variable is utilized by
-.Nm rlogin :
-.Bl -tag -width TERM
-.It Ev TERM
-Determines the user's terminal type.
-.El
-.Sh SEE ALSO
-.Xr rsh 1 ,
-.Xr kerberos 3 ,
-.Xr krb_sendauth 3 ,
-.Xr krb_realmofhost 3
-.Sh HISTORY
-The
-.Nm rlogin
-command appeared in
-.Bx 4.2 .
-.Sh BUGS
-.Nm Rlogin
-will be replaced by
-.Xr telnet 1
-in the near future.
-.Pp
-More of the environment should be propagated.
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