Telnet Essay, Research Paper
Telnet
PURPOSE OF THIS REPORT
Before gophers, hypertext, and sophisticated web browsers, telnet was
the primary means by which computer users connected their machines with other
computers around the world. Telnet is a plain ASCII terminal emulation
protocol that is still used to access a variety of information sources, most
notably libraries and local BBS’s. This report will trace the history and usage
of this still popular and widely used protocol and explain where and how it
still manages to fit in today.
HISTORY AND FUTURE OF TELNET
“Telnet” is the accepted name of the Internet protocol and the command
name on UNIX systems for a type of terminal emulation program which allows users
to log into remote computer networks, whether the network being targeted for
login is physically in the next room or halfway around the globe. A common
program feature is the ability to emulate several diverse types of terminals–
ANSI, TTY, vt52, and more. In the early days of networking some ten to fifteen
years ago, the “internet” more or less consisted of telnet, FTP (file transfer
protocol), crude email programs, and news reading. Telnet made library catalogs,
online services, bulletin boards, databases and other network services available
to casual computer users, although not with the friendly graphic user interfaces
one sees today.
Each of the early internet functions could be invoked from the UNIX
prompt, however, each of them used a different client program with its own
unique problems. Internet software has since greatly matured, with modern web
browsers (i.e. Netscape and Internet Explorer) easily handling the WWW protocol
(http) along with the protocols for FTP, gopher, news, and email. Only the
telnet protocol to this day requires the use of an external program.
Due to problems with printing and saving and the primitive look and
feel of telnet connections, a movement is underway to transform information
resources from telnet-accessible sites to full fledged web sites. However, it
is estimated that it will still take several years before quality web interfaces
exist for all of the resources now currently available only via telnet.
Therefore, knowing the underlying command structure of terminal emulation
programs like telnet is likely to remain necessary for the networking
professional for some time to come.
ADVANTAGES AND DISADVANTAGES OF TELNET
The chief advantage to the telnet protocol today lies in the fact that
many services and most library catalogs on the Internet remain accessible today
only via the telnet connection. Since telnet is a terminal application, many
see it as a mere holdover from the days of mainframe computers and minicomputers.
With the recent interest in $500 Internet terminals may foretell a resurgence
in this business. Disadvantages include the aforementioned problems that telnet
tends to have printing and saving files, and its primitive look and feel when
compared to more modern web browsers.
OTHER APPROACHES
The functionality of the telnet protocol may be compared with the UNIX
“rlogin” command, an older remote command that still has some utility today.
Rlogin is a protocol invoked by users with accounts on two different UNIX
machines, allowing connections for certain specified users without a password.
This requires setting up a “.rhosts” or “/etc/hosts.equiv” file and may involve
some security risks, so caution is advised.
Using telnet instead of the rlogin command will accomplish the same
results, but the use of the rlogin command will have the effect of saving
keystrokes, particularly if it is used in conjunction with an alias.
CONCLUSION
Some argue that the future of the Internet lies in sophisticated web
browsers like Netscape and Internet Explorer, or tools such as Gopher that
“save” end users from having to deal with the command line prompt and the
peculiar details of commands like Telnet. While that may be the case, the
tendency remains in place for programmers to develop new software by building on
the old. Therefore, knowing the underlying command structure of older protocols
like telnet and rlogin are likely to remain essential skills for the networking
professional in the forseeable future.
Другие работы по теме:
Poem Fading Away Essay Research Paper as
Poem: Fading Away Essay, Research Paper as i gaze at the falling rain trying to get away from all the pain som uch tension rising in the air dying inside does anyone care
Romeo An Juliet Essay Research Paper hi
Romeo An Juliet Essay, Research Paper hi i need an essay about a character in romeo and juliet that demonsrtated maturity. in a well developed multi pagraph essay and say why you think the character’s maturity was greater than the other characters in the play.
Oh Really Essay Research Paper Oh Reallyyou
Oh Really? Essay, Research Paper Oh Really, you think i am a lark, the dogs they run and bark, but when i say to them, shut up shut up shut up, you say to be nice to them,
Methods Of Chat Essay Research Paper At
Methods Of Chat Essay, Research Paper At one time, most chatting was done on porches or over a back yard fence. But not any more! Now you can talk to anyone, anywhere in the world, anytime you
Shane Essay Research Paper Sometimes I need
Shane Essay, Research Paper Sometimes, I need you more than I need air And sometimes I miss you more than I will forever, never forget the times that we have shaared. The are priceless
Poem Belong Essay Research Paper Where I
Poem: Belong Essay, Research Paper Where I belong I am weak, I am strong I will fit where I belong don’t know where it is for now but it will come, if I allow tomorrow, I start a brand new day
Him Essay Research Paper I think about
Him Essay, Research Paper I think about him day and night The though won’t go away And, oh, how I would hold him tight every second of the day He is perfect, that is true, not an average me or you
Every Single Day Essay Research Paper Every
Every Single Day Essay, Research Paper Every Single Day By Kacey Babineaux You just can?t stop looking for Your old friends Your old lovers Your old hope But you do quietly wonder to yourself,
Poem She Sat Essay Research Paper She
Poem: She Sat Essay, Research Paper She sat… helpless in her room praying to whatever god there may be to let her call to him. could god ignore such a painful cry?
School Essay Research Paper School Where
School Essay, Research Paper School! Where did they come up with that name? I guess because it rhymes with lame Now this rhyme you read will be quite corny Please don’t get upset, mad, or horny
Cgi Scripts Essay Research Paper CGI Scripts
Cgi Scripts Essay, Research Paper CGI Scripts Must have Internet service provider that will allow you to run CGI scripts. You should really have telnet access to your account, too
Internet For Dummies Essay Research Paper The
Internet For Dummies Essay, Research Paper The Internet is a huge network of computers spanning the lengths of this planet and is now started to bring in the surrounding area like space. Some computers share data like servers, others just surf the web as clients downloading the data. Public Internet began in the late 70?s, but that?s not what I?m going to teach you.
Ode To Boys Essay Research Paper We
Ode To Boys Essay, Research Paper We like them But do they like us The ones we do never fuss They don’t stop in And we wonder why We stress, we bitch We sometimes cry
Crying Again Essay Research Paper The Sky
Crying Again Essay, Research Paper The Sky is crying again And i am crying again. When did it start? When will it end? How’d i wind up with out a friend? Tears from my heart cling to my soul.
Life Is Like Essay Research Paper Life
Life Is Like Essay, Research Paper Life is like a car. When it?s new, it usually works all right. As time drives by, it breaks down and needs repairs. Life is like a leaf. In its youth, it
Hell Day Essay Research Paper Hell day
Hell Day Essay, Research Paper Hell day is a fun day where everything is like a burn day. If you would listen you could learn about this day and be apart of this day. If you are wise then you will relize that hell day is satans Birthday!!!!!!!!!!!!!!
Dare Essay Essay Research Paper What DARE
Dare Essay Essay, Research Paper What D.A.R.E Means To Me Dare has prepared me to say no to drugs in eight different ways. If anyone asks me to do drugs I will know what to do, such as- just ignoring the person or just
The Playground Essay Research Paper I have
The Playground Essay, Research Paper I have a friend I used to know who had a playground where we would go The times we had are fresh in my mind but they are from another time
How To Writing A Research Essay Essay
, Research Paper How To Writing A Research Essay The toughest part of the essay, for me, was taking all the information I had gained and reduce it to a mere few pages essay. After all, quality is better