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Annotation of cci/usr/src/man/man8/telnetd.8c, revision 1.1

1.1     ! root        1: .TH TELNETD 8C "4 March 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: telnetd \- DARPA TELNET protocol server
        !             5: .SH SYNOPSIS
        !             6: .B /etc/telnetd
        !             7: [
        !             8: .B \-d
        !             9: ] [
        !            10: .I port
        !            11: ]
        !            12: .SH DESCRIPTION
        !            13: .I Telnetd
        !            14: is a server which supports the DARPA standard TELNET
        !            15: virtual terminal protocol.  The TELNET server operates
        !            16: at the port indicated in the ``telnet'' service description;
        !            17: see
        !            18: .IR services (5).
        !            19: This port number may be overridden (for debugging purposes)
        !            20: by specifying a port number on the command line.  If the
        !            21: .B \-d
        !            22: option is specified, each socket created by
        !            23: .I telnetd
        !            24: will have debugging enabled (see SO_DEBUG in
        !            25: .IR socket (2)).
        !            26: .PP
        !            27: .I Telnetd
        !            28: operates by allocating a pseudo-terminal device (see
        !            29: .IR pty (4))
        !            30: for a client, then creating a login process which has
        !            31: the slave side of the pseudo-terminal as 
        !            32: .BR stdin ,
        !            33: .BR stdout ,
        !            34: and
        !            35: .BR stderr .
        !            36: .I Telnetd
        !            37: manipulates the master side of the pseudo terminal,
        !            38: implementing the TELNET protocol and passing characters
        !            39: between the client and login process.
        !            40: .PP
        !            41: When a TELNET session is started up, 
        !            42: .I telnetd
        !            43: sends a TELNET option to the client side indicating
        !            44: a willingness to do ``remote echo'' of characters.
        !            45: The pseudo terminal allocated to the client is configured
        !            46: to operate in ``cooked'' mode, and with XTABS and CRMOD
        !            47: enabled (see
        !            48: .IR tty (4)).
        !            49: Aside from this initial setup, the only mode changes
        !            50: .I telnetd
        !            51: will carry out are those required for echoing characters
        !            52: at the client side of the connection.
        !            53: .PP
        !            54: .I Telnetd
        !            55: supports binary mode, and most of the common TELNET options,
        !            56: but does not, for instance, support timing marks.  Consult
        !            57: the source code for an exact list of which options are not
        !            58: implemented.
        !            59: .SH "SEE ALSO"
        !            60: telnet(1C)
        !            61: .SH BUGS
        !            62: .I Telnetd
        !            63: supports at most 16 users. It uses these
        !            64: pseudo-terminals
        !            65: /dev/ptyp[0-9a-f].
        !            66: .PP
        !            67: A complete list of the options supported should be given here.

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