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Annotation of 43BSDReno/usr.bin/rlogin/rlogin.1, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983, 1990 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"     @(#)rlogin.1   6.16 (Berkeley) 7/24/90
        !            19: .\"
        !            20: .Dd July 24, 1990
        !            21: .Dt RLOGIN 1
        !            22: .Os BSD 4.2
        !            23: .Sh NAME
        !            24: .Nm rlogin
        !            25: .Nd remote login
        !            26: .Sh SYNOPSIS
        !            27: .Ar rlogin
        !            28: .Op Fl 8KLdx
        !            29: .Op Fl e Ar char
        !            30: .Op Fl k Ar realm
        !            31: .Op Fl l Ar username
        !            32: .Ar host
        !            33: .Sh DESCRIPTION
        !            34: .Nm Rlogin
        !            35: starts a terminal session on a remote host
        !            36: .Ar host  .
        !            37: .Pp
        !            38: .Nm Rlogin
        !            39: first attempts to use the Kerberos authorization mechanism, described below.
        !            40: If the remote host does not supporting Kerberos the standard Berkeley
        !            41: .Pa rhosts
        !            42: authorization mechanism is used.
        !            43: The options are as follows:
        !            44: .Tw Fl
        !            45: .Tp Fl 8
        !            46: The
        !            47: .Fl 8
        !            48: option allows an eight-bit input data path at all times; otherwise
        !            49: parity bits are stripped except when the remote side's stop and start
        !            50: characters are other than ^S/^Q.
        !            51: Eight-bit mode is the default.
        !            52: .Tp Fl K
        !            53: The
        !            54: .Fl K
        !            55: option turns off all Kerberos authentication.
        !            56: .Tp Fl L
        !            57: The
        !            58: .Fl L
        !            59: option allows the rlogin session to be run in ``litout'' (see
        !            60: .Xr tty  4  )
        !            61: mode.
        !            62: .Tp Fl d
        !            63: The
        !            64: .Fl d
        !            65: option turns on socket debugging (see
        !            66: .Xr setsockopt  2  )
        !            67: on the TCP sockets used for communication with the remote host.
        !            68: .Tp Fl e
        !            69: By default, the tilde (``~'') character is the escape character.
        !            70: The
        !            71: .Fl e
        !            72: option allows specification of a different escape character.
        !            73: .Tp Fl k
        !            74: The
        !            75: .FL k
        !            76: option requests rlogin to obtain tickets for the remote host
        !            77: in realm
        !            78: .Ar realm
        !            79: instead of the remote host's realm as determined by
        !            80: .Xr krb_realmofhost  3  .
        !            81: .Tp Fl x
        !            82: The
        !            83: .Fl x
        !            84: option turns on DES encryption for all data passed via the
        !            85: rlogin session.
        !            86: This may impact response time and CPU utilization, but provides
        !            87: increased security.
        !            88: .Tp
        !            89: .Pp
        !            90: A line of the form ``~.'' disconnects from the remote host, where ``~''
        !            91: is the escape character.
        !            92: Similarly, the line ``~^Z'' will suspend the
        !            93: .Nm rlogin
        !            94: session.
        !            95: Substitution of the delayed-suspend character (normally ^Y) for the
        !            96: suspend character suspends the send portion of the rlogin, but allows
        !            97: output from the remote system.
        !            98: .Pp
        !            99: All echoing takes place at the remote site, so that (except for delays)
        !           100: the
        !           101: .Nm rlogin
        !           102: is transparent.
        !           103: Flow control via ^S/^Q and flushing of input and output on interrupts
        !           104: are handled properly.
        !           105: .Sh KERBEROS AUTHENTICATION
        !           106: Each user may have a private authorization list in the file
        !           107: .Pa .klogin
        !           108: in their home directory.
        !           109: Each line in this file should contain a Kerberos principal name of the
        !           110: form
        !           111: .Ar principal.instance@realm  .
        !           112: If the originating user is authenticated to one of the principals named
        !           113: in
        !           114: .Pa .klogin ,
        !           115: access is granted to the account.
        !           116: The principal
        !           117: .Ar accountname.@localrealm
        !           118: is granted access if
        !           119: there is no
        !           120: .Pa .klogin
        !           121: file.
        !           122: Otherwise a login and password will be prompted for on the remote machine
        !           123: as in
        !           124: .Xr login  1  .
        !           125: To avoid certain security problems, the
        !           126: .Pa .klogin
        !           127: file must be owned by
        !           128: the remote user.
        !           129: .Pp
        !           130: If Kerberos authentication fails, a warning message is printed and the
        !           131: standard Berkeley
        !           132: .Em rlogin
        !           133: is used instead.
        !           134: .Sh ENVIRONMENT
        !           135: The following environment variable is utilized by
        !           136: .Nm rlogin :
        !           137: .Tw Fl
        !           138: .Tp Ev TERM
        !           139: to find user's terminal type.
        !           140: .Tp
        !           141: .Sh SEE ALSO
        !           142: .Xr rsh 1 ,
        !           143: .Xr kerberos 3 ,
        !           144: .Xr krb_sendauth 3 ,
        !           145: .Xr krb_realmofhost 3
        !           146: .Sh HISTORY
        !           147: .Nm Rlogin
        !           148: appeared in 4.2 BSD.
        !           149: .Sh BUGS
        !           150: .Nm Rlogin
        !           151: will be replaced by
        !           152: .Xr telnet  1
        !           153: in the near future.
        !           154: .Pp
        !           155: More of the environment should be propagated.

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