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[linuxjm/jm.git] / manual / netkit / draft / man8 / telnetd.8

.\" Copyright (c) 1983 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.
.\"
.\"     from: @(#)telnetd.8     6.8 (Berkeley) 4/20/91
.\"     $Id: telnetd.8,v 1.18 2000/07/30 23:57:10 dholland Exp $
.\"
.\" Japanese Version Copyright (c) 2001 Yuichi SATO
.\"         all rights reserved.
.\" Translated Sun Jan 14 21:27:21 JST 2001
.\"         by Yuichi SATO <sato@complex.eng.hokudai.ac.jp>
.\"
.\"WORD:        pseudo terminal         µ¿»÷üËö
.\"WORD:        virtual terminal        ²¾ÁÛüËö
.\"
.Dd December 29, 1996
.Dt TELNETD 8
.Os "Linux NetKit (0.17)"
.\"O .Sh NAME
.Sh ̾Á°
.Nm telnetd
.Nd DARPA
.Tn telnet
.\"O protocol server
¥×¥í¥È¥³¥ë¥µ¡¼¥Ð
.\"O .Sh SYNOPSIS
.Sh ½ñ¼°
.Nm /usr/sbin/in.telnetd
.Op Fl hns
.Op Fl a Ar authmode
.Op Fl D Ar debugmode
.Op Fl L Ar loginprg
.Op Fl S Ar tos
.Op Fl X Ar authtype
.Op Fl edebug
.Op Fl debug Ar port
.\"O .Sh DESCRIPTION
.Sh ÀâÌÀ
.\"O The
.\"O .Nm telnetd
.\"O program is a server which supports the 
.\"O .Tn DARPA
.\"O .Tn telnet
.\"O interactive communication protocol.
.Nm telnetd
¥×¥í¥°¥é¥à¤Ï¡¢
.Tn DARPA
.Tn telnet
ÂÐÏÃŪÄÌ¿®¥×¥í¥È¥³¥ë¤ò¥µ¥Ý¡¼¥È¤¹¤ë¥µ¡¼¥Ð¤Ç¤¢¤ë¡£
.\"O .Nm Telnetd
.\"O is normally invoked by the internet server (see
.\"O .Xr inetd 8 )
.\"O for requests to connect to the
.\"O .Tn telnet
.\"O port as indicated by the
.\"O .Pa /etc/services
.\"O file (see
.\"O .Xr services 5 ) .
.Nm telnetd
¤Ï¡¢Ä̾ï¤Ï
.Pa /etc/services
¥Õ¥¡¥¤¥ë
.Ns ( Xr services 5
¤ò»²¾È) ¤Ëµ­½Ò¤µ¤ì¤Æ¤¤¤ë
.Tn telnet
¥Ý¡¼¥È¤Ø¤ÎÀܳÍ×µá¤ò¼õ¤±¤Æ¡¢
¥¤¥ó¥¿¡¼¥Í¥Ã¥È¥µ¡¼¥Ð
.Ns ( Xr inetd 8
¤ò»²¾È) ¤«¤éµ¯Æ°¤µ¤ì¤ë¡£
.\"O The
.\"O .Fl debug
.\"O option may be used to start up 
.\"O .Nm telnetd
.\"O manually, instead of through
.\"O .Xr inetd 8 .
.Fl debug
¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Nm telnetd
¤ò
.Xr inetd 8
¤Ç¤Ï¤Ê¤¯¡¢¼êÆ°¤Çµ¯Æ°¤¹¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
.\"O If started up this way, 
.\"O .Ar port
.\"O may be specified to run 
.\"O .Nm telnetd
.\"O on an alternate 
.\"O .Tn TCP 
.\"O port number.
¤³¤ÎÊýË¡¤Çµ¯Æ°¤·¤¿¾ì¹ç¡¢
Ê̤Î
.Tn TCP
¥Ý¡¼¥ÈÈÖ¹æ¤Ç
.Nm telnetd
¤ò¼Â¹Ô¤¹¤ë¤¿¤á¤Ë¡¢
.Ar port
¤ò»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤­¤ë¡£
.Pp
.\"O The 
.\"O .Nm telnetd
.\"O program accepts the following options:
.Nm telnetd
¥×¥í¥°¥é¥à¤Ï°Ê²¼¤Î¥ª¥×¥·¥ç¥ó¤ò¼õ¤±ÉÕ¤±¤ë:
.Bl -tag -width "-a authmode"
.It Fl a Ar authmode
.\"O This option may be used for specifying what mode should
.\"O be used for authentication.
.\"O Note that this option is only useful if
.\"O .Nm telnetd
.\"O has been compiled with support for authentication, which is not
.\"O available in the current version.  The following values of
.\"O .Ar authmode 
.\"O are understood:
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢¤É¤Î¥â¡¼¥É¤¬Ç§¾Ú¤Ë»È¤ï¤ì¤ë¤«¤ò»ØÄꤹ¤ë¤¿¤á¤ËÍѤ¤¤é¤ì¤ë¡£
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Nm telnetd
¤¬Ç§¾Ú¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ß¡¢
Í­¸ú¤Ç¤¢¤ëÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£
¤³¤ì¤Ï¸½ºß¤Î¥Ð¡¼¥¸¥ç¥ó¤Ç¤Ï»ÈÍѤǤ­¤Ê¤¤¡£
.Ar authmode
¤Î¤È¤·¤Æ¤Ï¡¢°Ê²¼¤ÎÃͤò¼õ¤±ÉÕ¤±¤ë:
.Bl -tag -width debug
.It debug
.\"O Turns on authentication debugging code.
ǧ¾Ú¤Î¥Ç¥Ð¥Ã¥°¥³¡¼¥É¤òÍ­¸ú¤Ë¤¹¤ë¡£
.It user
.\"O Only allow connections when the remote user can provide valid
.\"O authentication information to identify the remote user, and is allowed
.\"O access to the specified account without providing a password.
¥ê¥â¡¼¥È¥æ¡¼¥¶¤Ï¡¢¼«Ê¬¼«¿È¤Ç¤¢¤ë¤³¤È¼¨¤¹¤¿¤á¤Î
Í­¸ú¤Êǧ¾Ú¾ðÊó¤òÄ󶡤·¤¿»þ¤Ë¤Î¤ßÀܳ¤¬µö²Ä¤µ¤ì¤ë¡£
¤³¤Î¾ì¹ç¡¢»ØÄꤵ¤ì¤¿¥¢¥«¥¦¥ó¥È¤ËÂФ·¤Æ¤Ï¡¢
¥Ñ¥¹¥ï¡¼¥É¤ÎÄ󶡤ʤ·¤ËÀܳ¤¬µö²Ä¤µ¤ì¤ë¡£
.It valid
.\"O Only allow connections when the remote user can provide valid
.\"O authentication information to identify the remote user.  The
.\"O .Xr login 1
.\"O command will provide any additional user verification needed if the
.\"O remote user is not allowed automatic access to the specified account.
¥ê¥â¡¼¥È¥æ¡¼¥¶¤Ï¡¢¼«Ê¬¼«¿È¤Ç¤¢¤ë¤³¤È¼¨¤¹¤¿¤á¤Î
Í­¸ú¤Êǧ¾Ú¾ðÊó¤òÄ󶡤·¤¿»þ¤Ë¤Î¤ßÀܳ¤¬µö²Ä¤µ¤ì¤ë¡£
¥ê¥â¡¼¥È¥æ¡¼¥¶¤Ë»ØÄꤵ¤ì¤¿¥¢¥«¥¦¥ó¥È¤ËÂФ¹¤ë
¼«Æ°Åª¤ÊÀܳ¤¬µö²Ä¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¡¢
.Xr login 1
¥³¥Þ¥ó¥É¤Ï¡¢É¬ÍפȤʤëÊ̤Υ桼¥¶Ç§¾Ú¤ò¹Ô¤¦¡£
.It other
.\"O Only allow connections that supply some authentication information.
.\"O This option is currently not supported by any of the existing
.\"O authentication mechanisms, and is thus the same as specifying
.\"O .Cm valid .
¤¢¤ë¼ï¤Îǧ¾Ú¾ðÊó¤òÄ󶡤·¤¿¾ì¹ç¤Î¤ßÀܳ¤òµö²Ä¤¹¤ë¡£
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢¸½ºß¤Î¤È¤³¤í¡¢
´û¸¤Î¤¤¤º¤ì¤Îǧ¾ÚÊýË¡¤Ç¤â¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤Ê¤¤¤¿¤á¡¢
.Cm valid
¥ª¥×¥·¥ç¥ó¤ò»ØÄꤹ¤ë¤Î¤ÈƱ¤¸¤Ç¤¢¤ë¡£
.It none
.\"O This is the default state.  Authentication information is not
.\"O required.  If no or insufficient authentication information is
.\"O provided, then the
.\"O .Xr login 1
.\"O program will provide the necessary user verification.
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¤³¤Î¾õÂ֤Ǥ¢¤ë¡£
ǧ¾Ú¾ðÊó¤ÏÍ׵ᤵ¤ì¤Ê¤¤¡£
¤â¤·Ç§¾Ú¾ðÊ󤬤ʤ«¤Ã¤¿¤êÉÔ½½Ê¬¤Ç¤¢¤ì¤Ð¡¢
.Xr login 1
¥×¥í¥°¥é¥à¤Ë¤è¤Ã¤ÆɬÍפȤʤë¥æ¡¼¥¶Ç§¾Ú¤ò¹Ô¤¦¡£
.It off
.\"O This disables the authentication code.  All user verification will
.\"O happen through the
.\"O .Xr login 1
.\"O program.
ǧ¾Ú¥³¡¼¥É¤ò̵¸ú¤Ë¤¹¤ë¡£
¤¹¤Ù¤Æ¤Î¥æ¡¼¥¶¾ÚÌÀ¤¬
.Xr login 1
¥×¥í¥°¥é¥à¤Ë¤è¤Ã¤Æ¹Ô¤ï¤ì¤ë¡£
.El
.It Fl D Ar debugmode
.\"O This option may be used for debugging purposes.  This allows
.\"O .Nm telnetd
.\"O to print out debugging information to the connection, allowing the
.\"O user to see what
.\"O .Nm telnetd
.\"O is doing.  There are several possible values for
.\"O .Ar debugmode:
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¥Ç¥Ð¥Ã¥¯¤Î¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
¤³¤ì¤Ë¤è¤Ã¤Æ
.Nm telnetd
¤Ë¥Ç¥Ð¥Ã¥°¾ðÊó¤òɽ¼¨¤µ¤»¡¢
.Nm telnetd
¤ÎÆ°ºî¤ò¥æ¡¼¥¶¤¬¸«¤ë¤³¤È¤¬¤Ç¤­¤ë¡£
°Ê²¼¤Ë¼¨¤¹¤è¤¦¤Ê¡¢¤¤¤¯¤Ä¤«¤Î
.Ar debugmode
¤¬¤¢¤ë:
.Bl -tag -width exercise
.It Cm options
.\"O Prints information about the negotiation of
.\"O .Tn telnet
.\"O options.
.Tn telnet
¥ª¥×¥·¥ç¥ó¤Î¥Í¥´¥·¥¨¡¼¥·¥ç¥ó¤Ë¤Ä¤¤¤Æ¤Î¾ðÊó¤¬É½¼¨¤µ¤ì¤ë¡£
.It Cm report
.\"O Prints the 
.\"O .Cm options
.\"O information, plus some additional information about what processing is
.\"O going on.
.Cm options
¤Çɽ¼¨¤µ¤ì¤ë¾ðÊó¤Ë²Ã¤¨¤Æ¡¢
¤É¤Î¤è¤¦¤ÊÁàºî¤¬¹Ô¤ï¤ì¤Æ¤¤¤ë¤Î¤«¤È¤¤¤¦¡¢
¤¤¤¯¤Ä¤«¤ÎÉÕ²ÃŪ¤Ê¾ðÊó¤¬É½¼¨¤µ¤ì¤ë¡£
.It Cm netdata
.\"O Displays the data stream received by
.\"O .Nm telnetd.
.Nm telnetd
¤¬¼õ¤±¼è¤Ã¤¿¥Ç¡¼¥¿¥¹¥È¥ê¡¼¥à¤òɽ¼¨¤¹¤ë¡£
.It Cm ptydata
.\"O Displays data written to the pty.
pty ¤Ë½ñ¤«¤ì¤¿¥Ç¡¼¥¿¤òɽ¼¨¤¹¤ë¡£
.It Cm exercise
.\"O Has not been implemented yet.
¤Þ¤À¼ÂÁõ¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
.El
.It Fl edebug
.\"O If
.\"O .Nm telnetd
.\"O has been compiled with support for encryption, then the
.\"O .Fl edebug
.\"O option may be used to enable encryption debugging code.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Nm telnetd
¤¬°Å¹æ²½¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ß¡¢
Í­¸ú¤Ç¤¢¤ëÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£
.Fl edebug
¥ª¥×¥·¥ç¥ó¤Ï¡¢°Å¹æ²½¥Ç¥Ð¥Ã¥°¥³¡¼¥É¤òÍ­¸ú¤Ë¤¹¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
.It Fl h
.\"O Disables the printing of host-specific information before
.\"O login has been completed.
¥í¥°¥¤¥ó¤¬´°Î»¤¹¤ë¤Þ¤Ç¥Û¥¹¥È¤ËÆÃÍ­¤Î¾ðÊó¤òɽ¼¨¤·¤Ê¤¤¤è¤¦¤Ë¤¹¤ë¡£
.It Fl L Ar loginprg
.\"O This option may be used to specify a different login program.
.\"O By default, 
.\"O .Pa /bin/login
.\"O is used.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢Ê̤Πlogin ¥×¥í¥°¥é¥à¤ò»ØÄꤹ¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¢
.Pa /bin/login
¤¬»È¤ï¤ì¤ë¡£
.It Fl n
.\"O Disable
.\"O .Dv TCP
.\"O keep-alives.  Normally
.\"O .Nm telnetd
.\"O enables the
.\"O .Tn TCP
.\"O keep-alive mechanism to probe connections that
.\"O have been idle for some period of time to determine
.\"O if the client is still there, so that idle connections
.\"O from machines that have crashed or can no longer
.\"O be reached may be cleaned up.
.Dv TCP
keep-alives ¤ò̵¸ú¤Ë¤¹¤ë¡£
Ä̾ï
.Nm telnetd
¤Ï¡¢
¥¯¥é¥¤¥¢¥ó¥È¤¬¤Þ¤À¸ºß¤¹¤ë¤«¤ò·èÄꤹ¤ë¤¿¤á¤Ë¡¢
¤¢¤ë°ìÄê´ü´Ö¥¢¥¤¥É¥ë¤Ë¤Ê¤Ã¤Æ¤¤¤ëÀܳ¤òÄ´¤Ù¤ë
.Tn TCP
keep-alive µ¡¹½¤òÍ­¸ú¤Ë¤·¤Æ¤¤¤ë¡£
¤³¤ì¤Ë¤è¤ê¡¢¥¯¥é¥Ã¥·¥å¤·¤¿¤ê¡¢
¤¹¤Ç¤ËÀܳ½ÐÍè¤Ê¤¤¤è¤¦¤Ê¥Þ¥·¥ó¤«¤é¤Î
¥¢¥¤¥É¥ë¥³¥Í¥¯¥·¥ç¥ó¤ò²ò¾Ã¤Ç¤­¤ë¡£
.It Fl s
.\"O This option is only enabled if
.\"O .Nm telnetd
.\"O is compiled with support for
.\"O .Tn SecurID
.\"O cards.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Nm telnetd
¤¬
.Tn SecurID
¥«¡¼¥É¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ß¡¢Í­¸ú¤Ç¤¢¤ë¡£
.\"O It causes the
.\"O .Fl s
.\"O option to be passed on to
.\"O .Xr login 1 ,
.\"O and thus is only useful if
.\"O .Xr login 1
.\"O supports the
.\"O .Fl s
.\"O flag to indicate that only
.\"O .Tn SecurID
.\"O validated logins are allowed. This is usually useful for controlling
.\"O remote logins from outside of a firewall.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Fl s
¥ª¥×¥·¥ç¥ó¤ò
.Xr login 1
¤Ë¤½¤Î¤Þ¤ÞÅϤ¹¤è¤¦¤Ë¤¹¤ë¤Î¤Ç¡¢
.Xr login 1
¤¬¡¢
.Tn SecurID
¤Ë¤è¤Ã¤Æǧ¾Ú¤µ¤ì¤¿¥í¥°¥¤¥ó¤Î¤ß¤òµö²Ä¤·¤Æ¤¤¤ë¤³¤È¤òɽ¤¹¡¢
.Fl s
¥Õ¥é¥°¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ßÌòΩ¤Ä¡£
¤³¤ì¤ÏÄ̾¥Õ¥¡¥¤¥¢¥¦¥©¡¼¥ë¤Î³°Â¦¤«¤é¤Î
¥ê¥â¡¼¥È¥í¥°¥¤¥ó¤òÀ©¸æ¤¹¤ë¾ì¹ç¤ËÌòΩ¤Ä¡£
.It Fl S Ar tos
.\"O Sets the IP type-of-service (TOS) option for the telnet
.\"O connection to the value
.\"O .Ar tos .
telnet Àܳ¤Î IP ¥µ¡¼¥Ó¥¹¥¿¥¤¥×
(type-of-service, TOS) ¥ª¥×¥·¥ç¥ó¤ÎÃͤò
.Ar tos
¤ËÀßÄꤹ¤ë¡£
.It Fl X Ar authtype
.\"O This option is only valid if
.\"O .Nm telnetd
.\"O has been built with support for the authentication option.
.\"O It disables the use of
.\"O .Ar authtype
.\"O authentication, and
.\"O can be used to temporarily disable
.\"O a specific authentication type without having to recompile
.\"O .Nm telnetd .
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Nm telnetd
¤¬Ç§¾Ú¥ª¥×¥·¥ç¥ó¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ß¡¢
Í­¸ú¤Ç¤¢¤ë¡£
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï
.Ar authtype
ǧ¾Ú¤Î»ÈÍѤòÉԲĤˤ·¡¢
.Nm telnetd
¤òºÆ¥³¥ó¥Ñ¥¤¥ë¤¹¤ë¤³¤È¤Ê¤¯¡¢
ÆÃÄê¤Îǧ¾Ú¥¿¥¤¥×¤ò°ì»þŪ¤Ë»ÈÍÑÉԲĤˤ¹¤ë¤³¤È¤¬¤Ç¤­¤ë¡£
.El
.Pp
.\"O If the file
.\"O .Pa /etc/issue.net
.\"O is present,
.\"O .Nm telnetd
.\"O will display its contents before the login prompt of a telnet session (see
.\"O .Xr issue.net 5 ) .
¥Õ¥¡¥¤¥ë
.Pa /etc/issue.net
¤¬Â¸ºß¤¹¤ë¾ì¹ç¡¢
.Nm telnetd
¤Ï¡¢telnet ¥»¥Ã¥·¥ç¥ó¤Î¥í¥°¥¤¥ó¥×¥í¥ó¥×¥È¤è¤êÁ°¤Ë¡¢
¤½¤Î¥Õ¥¡¥¤¥ë¤ÎÆâÍƤòɽ¼¨¤¹¤ë
.Ns ( Xr issue.net 5
¤ò»²¾È¤¹¤ë¤³¤È)¡£
.Pp
.\"O .Nm Telnetd
.\"O operates by allocating a pseudo-terminal device (see
.\"O .Xr pty 4 )
.\"O for a client, then creating a login process which has
.\"O the slave side of the pseudo-terminal as 
.\"O .Dv stdin ,
.\"O .Dv stdout ,
.\"O and
.\"O .Dv stderr .
.Nm telnetd
¤Ï¡¢µ¿»÷üËö¥Ç¥Ð¥¤¥¹
.Ns ( Xr pty 4
¤ò»²¾È) ¤ò¥¯¥é¥¤¥¢¥ó¥È¤Ë³ä¤êÅö¤Æ¡¢login ¥×¥í¥»¥¹¤òÀ¸À®¤¹¤ë¡£
¤³¤Î login ¥×¥í¥»¥¹¤Ï¡¢
.Dv stdin ,
.Dv stdout ,
.Dv stderr
¤È¤·¤Æµ¿»÷üËö¤Î¥¹¥ì¡¼¥Ö¦¤ò»ÈÍѤ¹¤ë¡£
.\"O .Nm Telnetd
.\"O manipulates the master side of the pseudo-terminal,
.\"O implementing the
.\"O .Tn telnet
.\"O protocol and passing characters
.\"O between the remote client and the login process.
.Nm telnetd
¤Ï¡¢
.Tn telnet
¥×¥í¥È¥³¥ë¤ò¼ÂÁõ¤·¡¢
¥ê¥â¡¼¥È¥¯¥é¥¤¥¢¥ó¥È¤È¥í¥°¥¤¥ó¥×¥í¥»¥¹¤Î´Ö¤Ëʸ»ú¤ò¼õ¤±ÅϤ¹¤³¤È¤Ë¤è¤ê¡¢
µ¿»÷üËö¤Î¥Þ¥¹¥¿¡¼Â¦¤òÁàºî¤¹¤ë¡£
.Pp
.\"O When a
.\"O .Tn telnet
.\"O session is started up, 
.\"O .Nm telnetd
.\"O sends
.\"O .Tn telnet
.\"O options to the client side indicating
.\"O a willingness to do the
.\"O following
.\"O .Tn telnet
.\"O options, which are described in more detail below:
.Tn telnet
¥»¥Ã¥·¥ç¥ó¤¬³«»Ï¤µ¤ì¤ë¤È¡¢
.Nm telnetd
¤Ï¡¢°Ê²¼¤Î
.Tn telnet
¥ª¥×¥·¥ç¥ó¤ò´õ˾¤·¤Æ¤¤¤ë¤³¤È¤ò¼¨¤¹¤¿¤á¤Ë¡¢
¥¯¥é¥¤¥¢¥ó¥È¦¤Ë¤³¤ì¤é¤Î
.Tn telnet
¥ª¥×¥·¥ç¥ó¤òÁ÷¿®¤¹¤ë¡£
¤³¤ì¤é¤Î¥ª¥×¥·¥ç¥ó¤Î¾ÜºÙ¤Ë¤Ä¤¤¤Æ¤Ï¡¢°Ê²¼¤ÇÀâÌÀ¤µ¤ì¤Æ¤¤¤ë:
.Bd -literal -offset indent
DO AUTHENTICATION
WILL ENCRYPT
DO TERMINAL TYPE
DO TSPEED
DO XDISPLOC
DO NEW-ENVIRON
DO ENVIRON
WILL SUPPRESS GO AHEAD
DO ECHO
DO LINEMODE
DO NAWS
WILL STATUS
DO LFLOW
DO TIMING-MARK
.Ed
.Pp
.\"O The pseudo-terminal allocated to the client is configured
.\"O to operate in \*(lqcooked\*(rq mode, and with 
.\"O .Dv XTABS
.\"O .Dv CRMOD
.\"O enabled (see
.\"O .Xr tty 4 ) .
¥¯¥é¥¤¥¢¥ó¥È¤Ë³ä¤êÅö¤Æ¤é¤ì¤¿µ¿»÷üËö¤Ï¡¢
\*(lqcooked\*(rq ¥â¡¼¥É¤ÇÆ°ºî¤·¡¢
.Dv XTABS
.Dv CRMOD
¤¬Í­¸ú¤Ë¤Ê¤ë¤è¤¦¤ËÀßÄꤵ¤ì¤ë
.Ns ( Xr tty 4
¤ò»²¾È¤¹¤ë¤³¤È)¡£
.Pp
.\"O .Nm Telnetd
.\"O has support for enabling locally the following
.\"O .Tn telnet
.\"O options:
.Nm telnetd
¤Ï¡¢¥í¡¼¥«¥ë¦¤ÇÍ­¸ú¤Ê¡¢°Ê²¼¤Î
.Tn telnet
¥ª¥×¥·¥ç¥ó¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë:
.Bl -tag -width "DO AUTHENTICATION"
.It "WILL ECHO"
.\"O When the
.\"O .Dv LINEMODE
.\"O option is enabled, a
.\"O .Dv WILL ECHO
.\"O or
.\"O .Dv WONT ECHO
.\"O will be sent to the client to indicate the
.\"O current state of terminal echoing.
.Dv LINEMODE
¥ª¥×¥·¥ç¥ó¤¬Í­¸ú¤Ê¾ì¹ç¡¢
üËö¤Î¸½ºß¤Î¥¨¥³¡¼¾õÂÖ¤ò¼¨¤¹¤¿¤á¤Ë¡¢
.Dv WILL ECHO
¤Þ¤¿¤Ï
.Dv WONT ECHO
¤¬¥¯¥é¥¤¥¢¥ó¥È¤ËÁ÷¿®¤µ¤ì¤ë¡£
.\"O When terminal echo is not desired, a
.\"O .Dv WILL ECHO
.\"O is sent to indicate that
.\"O .Tn telnetd
.\"O will take care of echoing any data that needs to be
.\"O echoed to the terminal, and then nothing is echoed.
üËö¥¨¥³¡¼¤¬É¬Íפʤ¤¾ì¹ç¡¢
üËö¤Ë¥¨¥³¡¼¤¹¤ëɬÍפ¬¤¢¤ë¥Ç¡¼¥¿¤ò
.Tn telnetd
¤¬¥¨¥³¡¼½èÍý¤¹¤ë¤³¤È¤ò¼¨¤¹¤¿¤á¤Ë¡¢
.Dv WILL ECHO
¤¬Á÷¿®¤µ¤ì¡¢²¿¤â¥¨¥³¡¼¤µ¤ì¤Ê¤¤¡£
.\"O When terminal echo is desired, a
.\"O .Dv WONT ECHO
.\"O is sent to indicate that
.\"O .Tn telnetd
.\"O will not be doing any terminal echoing, so the
.\"O client should do any terminal echoing that is needed.
üËö¥¨¥³¡¼¤¬É¬Íפʾì¹ç¡¢
.Tn telnetd
¤¬Ã¼Ëö¥¨¥³¡¼¤â¹Ô¤ï¤Ê¤¤¤³¤È¤ò¼¨¤¹¤¿¤á¤Ë¡¢
.Dv WONT ECHO
¤¬Á÷¿®¤µ¤ì¤ë¤Î¤Ç¡¢
üËö¥¨¥³¡¼¤¬É¬Íפʾì¹ç¤Ï¥¯¥é¥¤¥¢¥ó¥È¤¬¹Ô¤ï¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.It "WILL BINARY"
.\"O Indicates that the client is willing to send a
.\"O 8 bits of data, rather than the normal 7 bits
.\"O of the Network Virtual Terminal.
¥¯¥é¥¤¥¢¥ó¥È¤¬¡¢
Ä̾ï¤Î¥Í¥Ã¥È¥ï¡¼¥¯²¾ÁÛüËö¤¬ÍѤ¤¤ë 7 ¥Ó¥Ã¥È¤Î¥Ç¡¼¥¿¤Ç¤Ï¤Ê¤¯¡¢
8 ¥Ó¥Ã¥È¤Î¥Ç¡¼¥¿¤òÁ÷¿®¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "WILL SGA"
.\"O Indicates that it will not be sending
.\"O .Dv IAC GA,
.\"O go ahead, commands.
.Dv IAC GA
¤¹¤Ê¤ï¤Á go ahead ¥³¥Þ¥ó¥É¤òÁ÷¿®¤·¤Ê¤¤¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "WILL STATUS"
.\"O Indicates a willingness to send the client, upon
.\"O request, of the current status of all
.\"O .Tn TELNET
.\"O options.
¥¯¥é¥¤¥¢¥ó¥È¤«¤éÍ׵᤬¤¢¤Ã¤¿¾ì¹ç¤Ë¡¢Á´¤Æ¤Î
.Tn TELNET
¥ª¥×¥·¥ç¥ó¤Î¸½ºß¤Î¾õ¶·¤òÁ÷¿®¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "WILL TIMING-MARK"
.\"O Whenever a
.\"O .Dv DO TIMING-MARK
.\"O command is received, it is always responded
.\"O to with a
.\"O .Dv WILL TIMING-MARK
.Dv DO TIMING-MARK
¥³¥Þ¥ó¥É¤ò¼õ¿®¤·¤¿¾ì¹ç¡¢¾ï¤Ë¤½¤ì¤ËÂФ·¤Æ
.Dv WILL TIMING-MARK
¤òÊÖ¿®¤¹¤ë¡£
.It "WILL LOGOUT"
.\"O When a
.\"O .Dv DO LOGOUT
.\"O is received, a
.\"O .Dv WILL LOGOUT
.\"O is sent in response, and the
.\"O .Tn TELNET
.\"O session is shut down.
.Dv DO LOGOUT
¤ò¼õ¿®¤·¤¿¾ì¹ç¡¢
.Dv WILL LOGOUT
¤òÊÖ¿®¤·¡¢
.Tn TELNET
¥»¥Ã¥·¥ç¥ó¤ò¥·¥ã¥Ã¥È¥À¥¦¥ó¤¹¤ë¡£
.It "WILL ENCRYPT"
.\"O Only sent if
.\"O .Nm telnetd
.\"O is compiled with support for data encryption, and
.\"O indicates a willingness to decrypt
.\"O the data stream.
.Nm telnetd
¤¬¥Ç¡¼¥¿¤Î°Å¹æ²½¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç
¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ßÁ÷¿®¤µ¤ì¡¢
¥Ç¡¼¥¿Îó¤òÉü¹æ²½¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.El
.Pp
.\"O .Nm Telnetd
.\"O has support for enabling remotely the following
.\"O .Tn TELNET
.\"O options:
.Nm telnetd
¤Ï¡¢¥ê¥â¡¼¥È¦¤ÇÍ­¸ú¤Ê¡¢°Ê²¼¤Î
.Tn TELNET
¥ª¥×¥·¥ç¥ó¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë:
.Bl -tag -width "DO AUTHENTICATION"
.It "DO BINARY"
.\"O Sent to indicate that
.\"O .Tn telnetd
.\"O is willing to receive an 8 bit data stream.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.Tn telnetd
¤¬ 8 ¥Ó¥Ã¥È¤Î¥Ç¡¼¥¿Îó¤ò¼õ¿®¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¤¿¤á¤ËÁ÷¤é¤ì¤ë¡£
.It "DO LFLOW"
.\"O Requests that the client handle flow control
.\"O characters remotely.
¥¯¥é¥¤¥¢¥ó¥È¤¬¥Õ¥í¡¼À©¸æʸ»ú¤ò¥ê¥â¡¼¥È¦¤Ç½èÍý¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO ECHO"
.\"O This is not really supported, but is sent to identify a 4.2BSD
.\"O .Xr telnet 1
.\"O client, which will improperly respond with
.\"O .Dv WILL ECHO.
.\"O If a
.\"O .Dv WILL ECHO
.\"O is received, a
.\"O .Dv DONT ECHO
.\"O will be sent in response.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¼ÂºÝ¤Ë¤Ï¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤Ê¤¤¤¬¡¢
.Dv WILL ECHO
¤ËÂФ·¤ÆÀµ¤·¤¯±þÅú¤·¤Ê¤¤¡¢
4.2BSD ¤Î
.Xr telnet 1
¥¯¥é¥¤¥¢¥ó¥È¤ò¼±Ê̤¹¤ë¤¿¤á¤ËÁ÷¤é¤ì¤ë¡£
.Dv WILL ECHO
¤ò¼õ¿®¤¹¤ë¤È¡¢
.Dv DONT ECHO
¤¬ÊÖÅú¤È¤·¤ÆÁ÷¿®¤µ¤ì¤ë¡£
.It "DO TERMINAL-TYPE"
.\"O Indicates a desire to be able to request the
.\"O name of the type of terminal that is attached
.\"O to the client side of the connection.
Àܳ¤Î¥¯¥é¥¤¥¢¥ó¥È¦¤Ë³ä¤êÅö¤Æ¤é¤ì¤¿Ã¼Ëö¤Î
¥¿¥¤¥×̾¤òÍ×µá¤Ç¤­¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO SGA"
.\"O Indicates that it does not need to receive
.\"O .Dv IAC GA,
.\"O the go ahead command.
.Dv IAC GA
¤¹¤Ê¤ï¤Á go ahead ¥³¥Þ¥ó¥É¤ò¼õ¿®¤¹¤ëɬÍפ¬¤Ê¤¤¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO NAWS"
.\"O Requests that the client inform the server when
.\"O the window (display) size changes.
¥¦¥£¥ó¥É¥¦ (¥Ç¥£¥¹¥×¥ì¥¤) ¤Î¥µ¥¤¥º¤¬ÊѤï¤Ã¤¿¾ì¹ç¤Ë¡¢
¥¯¥é¥¤¥¢¥ó¥È¤¬¥µ¡¼¥Ð¤ËÃΤ餻¤ë¤³¤È¤òÍ׵᤹¤ë¡£
.It "DO TERMINAL-SPEED"
.\"O Indicates a desire to be able to request information
.\"O about the speed of the serial line to which
.\"O the client is attached.
¥¯¥é¥¤¥¢¥ó¥È¤Ë³ä¤êÅö¤Æ¤é¤ì¤¿¥·¥ê¥¢¥ë¥é¥¤¥ó¤Î
®Å٤˴ؤ¹¤ë¾ðÊó¤òÍ×µá¤Ç¤­¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO XDISPLOC"
.\"O Indicates a desire to be able to request the name
.\"O of the X windows display that is associated with
.\"O the telnet client.
telnet ¥¯¥é¥¤¥¢¥ó¥È¤¬»ÈÍѤ·¤Æ¤¤¤ë
X ¥¦¥£¥ó¥É¥¦¤Î¥Ç¥£¥¹¥×¥ì¥¤¤Î̾Á°¤òÍ×µá¤Ç¤­¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO NEW-ENVIRON"
.\"O Indicates a desire to be able to request environment
.\"O variable information, as described in RFC 1572.
RFC 1572 ¤Ë¼¨¤µ¤ì¤Æ¤¤¤ë
´Ä¶­ÊÑ¿ô¤Ë´Ø¤¹¤ë¾ðÊó¤òÍ×µá¤Ç¤­¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO ENVIRON"
.\"O Indicates a desire to be able to request environment
.\"O variable information, as described in RFC 1408.
RFC 1408 ¤Ë¼¨¤µ¤ì¤Æ¤¤¤ë
´Ä¶­ÊÑ¿ô¤Ë´Ø¤¹¤ë¾ðÊó¤òÍ×µá¤Ç¤­¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.It "DO LINEMODE"
.\"O Only sent if
.\"O .Nm telnetd
.\"O is compiled with support for linemode, and
.\"O requests that the client do line by line processing.
.Nm telnetd
¤¬ linemode ¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ßÁ÷¿®¤µ¤ì¡¢
¥¯¥é¥¤¥¢¥ó¥È¤Ë¹Ôñ°Ì¤Î½èÍý¤ò¹Ô¤¦¤³¤È¤òÍ׵᤹¤ë¡£
.It "DO TIMING-MARK"
.\"O Only sent if
.\"O .Nm telnetd
.\"O is compiled with support for both linemode and
.\"O kludge linemode, and the client responded with
.\"O .Dv WONT LINEMODE.
.Nm telnetd
¤¬ linemode ¤È kludge linemode ¤Î
ξÊý¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¡¢
¥¯¥é¥¤¥¢¥ó¥È¤¬
.Dv WONT LINEMODE
¤òÊÖ¿®¤·¤¿¾ì¹ç¤Ë¤Î¤ß¡¢Á÷¿®¤µ¤ì¤ë¡£
.\"O If the client responds with
.\"O .Dv WILL TM,
.\"O the it is assumed that the client supports
.\"O kludge linemode.
¥¯¥é¥¤¥¢¥ó¥È¤¬
.Dv WILL TM
¤òÊÖ¿®¤·¤¿¾ì¹ç¡¢
¥¯¥é¥¤¥¢¥ó¥È¤¬
kludge linemode
¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë¤È¸«¤Ê¤¹¡£
.\"O Note that the
.\"O .Op Fl k
.\"O option can be used to disable this.
.Op Fl k
¥ª¥×¥·¥ç¥ó¤Ï¡¢¤³¤Îµ¡Ç½¤ò̵¸ú¤Ë¤¹¤ë¤¿¤á¤Ë»ÈÍѤµ¤ì¤ëÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£
.It "DO AUTHENTICATION"
.\"O Only sent if
.\"O .Nm telnetd
.\"O is compiled with support for authentication, and
.\"O indicates a willingness to receive authentication
.\"O information for automatic login.
.Nm telnetd
¤¬Ç§¾Úµ¡Ç½¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ßÁ÷¿®¤µ¤ì¡¢
¼«Æ°¥í¥°¥¤¥ó¤Ë»ÈÍѤ¹¤ëǧ¾Ú¾ðÊó¤ò¼õ¿®¤¹¤ë¤è¤¦¤Ë¤¹¤ë¡£
.It "DO ENCRYPT"
.\"O Only sent if
.\"O .Nm telnetd
.\"O is compiled with support for data encryption, and
.\"O indicates a willingness to decrypt
.\"O the data stream.
.\"O .Xr issue.net 5 ) .
.Nm telnetd
¤¬¥Ç¡¼¥¿¤Î°Å¹æ²½¤ò¥µ¥Ý¡¼¥È¤¹¤ëÀßÄê¤Ç
¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¤Î¤ßÁ÷¿®¤µ¤ì¡¢
¥Ç¡¼¥¿Îó¤òÉü¹æ²½¤¹¤ë¤è¤¦¤Ë»ØÄꤹ¤ë¡£
.\"O .Sh FILES
.Sh ¥Õ¥¡¥¤¥ë
.Pa /etc/services ,
.Pa /etc/issue.net
.\"O .Sh "SEE ALSO"
.Sh ´ØÏ¢¹àÌÜ
.Xr telnet 1 ,
.Xr login 1 ,
.\"O .Xr issue.net 5 ,
.Xr issue.net 5
.\"O .Sh STANDARDS
.Sh ½àµò
.Bl -tag -compact -width RFC-1572
.It Cm RFC-854
.Tn TELNET
PROTOCOL SPECIFICATION
.It Cm RFC-855
TELNET OPTION SPECIFICATIONS
.It Cm RFC-856
TELNET BINARY TRANSMISSION
.It Cm RFC-857
TELNET ECHO OPTION
.It Cm RFC-858
TELNET SUPPRESS GO AHEAD OPTION
.It Cm RFC-859
TELNET STATUS OPTION
.It Cm RFC-860
TELNET TIMING MARK OPTION
.It Cm RFC-861
TELNET EXTENDED OPTIONS - LIST OPTION
.It Cm RFC-885
TELNET END OF RECORD OPTION
.It Cm RFC-1073
Telnet Window Size Option
.It Cm RFC-1079
Telnet Terminal Speed Option
.It Cm RFC-1091
Telnet Terminal-Type Option
.It Cm RFC-1096
Telnet X Display Location Option
.It Cm RFC-1123
Requirements for Internet Hosts -- Application and Support
.It Cm RFC-1184
Telnet Linemode Option
.It Cm RFC-1372
Telnet Remote Flow Control Option
.It Cm RFC-1416
Telnet Authentication Option
.It Cm RFC-1411
Telnet Authentication: Kerberos Version 4
.It Cm RFC-1412
Telnet Authentication: SPX
.It Cm RFC-1571
Telnet Environment Option Interoperability Issues
.It Cm RFC-1572
Telnet Environment Option
.\"O .Sh BUGS
.Sh ¥Ð¥°
.\"O Some
.\"O .Tn TELNET
.\"O commands are only partially implemented.
¤¤¤¯¤Ä¤«¤Î
.Tn TELNET
¥³¥Þ¥ó¥É¤Ï¡¢ÉôʬŪ¤Ë¤·¤«¼ÂÁõ¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
.Pp
.\"O Because of bugs in the original 4.2 BSD
.\"O .Xr telnet 1 ,
.\"O .Nm telnetd
.\"O performs some dubious protocol exchanges to try to discover if the remote
.\"O client is, in fact, a 4.2 BSD
.\"O .Xr telnet 1 .
¥ª¥ê¥¸¥Ê¥ë¤Î 4.2 BSD ¤Î
.Xr telnet 1
¤Î¥Ð¥°¤ËÂн褹¤ë¤¿¤á¡¢
.Nm telnetd
¤Ï¡¢¤¢¤ë¼ï¤Î¤¦¤µ¤ó¤¯¤µ¤¤¥×¥í¥È¥³¥ëÄÌ¿®¤ò¹Ô¤¦¤³¤È¤Ë¤è¤ê¡¢
¥ê¥â¡¼¥È¥¯¥é¥¤¥¢¥ó¥È¤¬¼ÂºÝ¤Ë
4.2 BSD ¤Î
.Xr telnet 1
¤Ç¤¢¤ë¤«¤òȽÃǤ·¤è¤¦¤È¤¹¤ë¡£
.Pp
.\"O Binary mode
.\"O has no common interpretation except between similar operating systems
.\"O (Unix in this case).
¥Ð¥¤¥Ê¥ê¥â¡¼¥É¤Ï¡¢¤è¤¯»÷¤¿¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à
(¤³¤Î¾ì¹ç Unix) ´Ö°Ê³°¤Ç¤Ï¡¢
°ìÈÌŪ¤Ê¸ß´¹À­¤¬¤Ê¤¤¡£
.Pp
.\"O The terminal type name received from the remote client is converted to
.\"O lower case.
¥ê¥â¡¼¥È¥¯¥é¥¤¥¢¥ó¥È¤«¤é¼õ¤±¼è¤Ã¤¿Ã¼Ëö¥¿¥¤¥×̾¤Ï¡¢¾®Ê¸»ú¤ËÊÑ´¹¤µ¤ì¤ë¡£
.Pp
.\"O .Nm Telnetd
.\"O never sends
.\"O .Tn TELNET
.\"O .Dv IAC GA
.\"O (go ahead) commands.
.Nm telnetd
¤Ï¡¢
.Tn TELNET
.Dv IAC GA
(go ahead) ¥³¥Þ¥ó¥É¤òÀäÂФËÁ÷¤é¤Ê¤¤¡£
.Pp
.\"O The source code is not comprehensible.
¥½¡¼¥¹¥³¡¼¥É¤¬Ê¬¤«¤ê¤ä¤¹¤¯¤Ê¤¤¡£
.Sh ËÝÌõ¼Ô¼Õ¼­
¤³¤Î man ¥Ú¡¼¥¸¤ÎËÝÌõ¤Ë¤¢¤¿¤ê¡¢
FreeBSD jpman project <http://www.jp.freebsd.org/man-jp/>
¤Ë¤è¤ëËÝÌõ¤ò»²¹Í¤Ë¤µ¤»¤Æ¤¤¤¿¤À¤¤¤¿¡£