As per Relevance of the word software, we have this rfc below:
Network Working Group J.
Request for Comments: 818
November 1982
The Remote User Telnet
This RFC is the specification of an application protocol. Any host
implements this application level service must follow this protocol
This RFC was suggested by Mike Mulligan some months ago when he was
BBN
In the ARPANET Host-to-Host Network Control Protocol (NCP) and in
Internet Transmission Control Protocol (TCP) well known sockets or
are used to identify services. The general notion is that there are
few types of services that are distinct and useful enough to use the
or TCP demultiplexing mechanism directly
The most common of these is the Server Telnet which generally
defines the network terminal access procedure for a system executive
That is, making a connection to the server Telnet port actually puts
caller in contact with the system executive, for example, the TOPS20
EXEC or the Unix Shell
On some small hosts there may be very limited functionality and
executive. In such cases it may be useful to designate specific
known ports for specific applications
This memo specifies that the specific service of User Telnet may
accessed (on hosts that choose to provide it) by opening a connection
port 107 (153 octal). The Telnet Protocol is to be used on
connection from the originating user to the server
EXAMPLE: REMOTE TELNET SERVICE ON THE BBN TC68
The TC68K is a Terminal Concentrator based on the Motorola MC68000
microprocessor. It is used at Bolt Beranek & Newman to provide
by terminals to the FiberNet, a local area network
The custom hardware provides one network connection, sixteen RS232
terminal connections, and a programmable timer
The software is based on the Micro-Operating System (MOS) using the IP
ICMP, TCP, and Telnet protocols. A user TC-Telnet application
an interface to allow the user to use the network to connect to a host
Postel [Page 1]
RFC 818 November 1982
Remote User Telnet
providing a network virtual terminal. A server Telnet also exists
the TC68K to serve as a front end for devices that have no awareness
the net. This is used for remote printer/plotters and computers with
network software
The TC68Ks at BBN are distributed about several buildings. To
an operational tool to test remote TC68Ks, the TC68K software
configured to put a user Telnet back to back with a server Telnet.
operator can open a connection to a remote TC68K and appear to be
terminal local to that unit. This verifies that the network
between the two units is operational and provides the operator
access to statistics that are kept as part of the standard
TC-Telnet application
Operator's Local Remote
Terminal <=TTY=> user <=FiberNet=> server <=PTY=>
TC-Telnet Telnet TC-
This solution was attractive as the only extra piece of
necessary for this was the "Pseudo Teletype" (PTY) device driver
MOS. This "device" appears as a terminal to its application, but
it is really doing is providing a character stream between
processes
Postel [Page 2]
if you see any problems within the linking, don't worry be happy,
this is version 0.1 of the Relevance System and you gotta expect some crappy subroutines sometimes,
just be content we did not write this in Java, which would have made this "bigger and better" HAHAHHA.
RFC documents can be found at I.E.T.F.
Relevance System Copyright © 2002 Spectrum WorldResearch
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collaboration of BobX
