dg_telnetd(1M)                  TCP/IP 5.4.2                  dg_telnetd(1M)


NAME
       dgtelnetd - TELNET protocol server

SYNOPSIS
           /usr/bin/dgtelnetd [ -l file ] [ -d ] [ -c ] [ -s ] [ -m ] [ -u
           ] [ -p psterm ]

DESCRIPTION
        NOTE:  Effective with DG/UX TCP/IP 5.4, this program is superseded
               by telnetd(1M). Since dgtelnetd(1M) will be removed in a
               future release, start using telnetd(1M) instead. Please let
               us know immediately via an STR if you have problems with
               telnetd(1M).

       The dgtelnetd server supports the DARPA standard TELNET virtual
       terminal protocol.  The TELNET server is invoked by the inetd server
       when an incoming connection is detected on the port specified in
       /etc/services.  See inetd(1M) and services(4) for details.

       The dgtelnetd server operates by allocating a pseudoterminal device
       (see pty(7)) for a client, then creating a login process that has the
       slave side of the pseudoterminal as stdin, stdout, and stderr.  The
       dgtelnetd server manipulates the master side of the pseudoterminal,
       implementing the TELNET protocol and passing characters between the
       client and login process.

       By default, dgtelnetd will search for pseudoterminals named
       /dev/ptypN, where N starts at 0 and goes to 255.  This search can be
       changed with the -p option, which specifies the first name in a
       sequence of names to search.  You can use the -p switch up to three
       times to start the search.  There is usually no need to use the -p
       option.

       Use the -d option to enable debugging.  Actions of dgtelnetd invoked
       with this option are undefined.  However, in general, dgtelnetd
       writes additional information regarding its actions to the logfile.

       The -l option and file name will write dgtelnetd log information to
       that file.

       When you use the -c option, the daemon initially negotiates remote
       echoing and suppresses the Go-Ahead option.  If the client program
       negotiates local echoing, the option is turned off.  Starting in
       DG/UX TCP/IP Revision 5.4 this is the default mode of operation.

       When you use the -s option, the daemon dynamically switches between
       line at a time and character at a time modes of operation based on
       the needs of the application program.  This was the default mode of
       operation for dgtelnetd for Revisions prior to DG/UX TCP/IP 5.4

       The -m option works like -c, but it cannot be turned off by any
       option negotiation sequence.

       Use the -u option to prevent the daemon from sending any data marked



Licensed material--property of copyright holder(s)                         1

dg_telnetd(1M)                  TCP/IP 5.4.2                  dg_telnetd(1M)


       as urgent.  This was previously accomplished through the -c option.

SEE ALSO
       inetd(1M), telnet(1C), pty(7).





















































Licensed material--property of copyright holder(s)                         2