Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
Can you elaborate the question a bit more? To tell you what's different about telnet, I need to know the other member of the comparison (telnet vs. _________).
Telnet is just another protocol to connect two remote computers.
telnet is a terminal server/client arrangement, like ssh except its unencrypted, so easy to spy. Do not use it.
ftp = File Txfr Protocol
tcp = Transmission Ctrl Protocol.
like difference between telnet & ftp and also between telnet & tcp
They are unrelated thing.
TCP is a more low level protocol, higher level protocols, like http, ftp or even ssh make instensive use of TCP.
Telnet is a terminal protocol, just like someone above said: don't use it. It's old and not reliable. Use ssh instead.
FTP is a protocol to transfer files between remote computers.
There are lots of docs around in the net explaining the different network protocols at many levels, the wiki is also useful for an initial review so you can get an idea where your research is heading.
Thanks everyone....
The general thing about TELNET is something i'm aware of and know...
Wanted to know, how TELNET's different from other protocols...
Telnet is rather primitive yes, but it has its uses. In embedded systems, where size is important, telnet is a useful alternative to ssh, which would be prohibitively large. Of course, in these places you also see things like xmodem and tftp.
On PC's tho, yea, telnet is a rather inferior alternative to ssh.
If you want to know what security measures does TELNET implement: none at all. The protocol is as plain and transparent as it can be.
If you mean "how to harden it", then I can't help. I never bothered really. There are better protocols around.
I consider it useful only for local stuff, overall when you need to connect to do fix something. It's useful to fix routers and things like that. I also use it sometimes to connect to mldonkey on my LAN server
Telnet is essentially obsolete at this point. Many (all?) distros do not even come with a telnet server installed. Telnet has been replaced with SSH. Where as all data passed between client and server with telnet is plain-text, I.E. readable from any one able to capture the packets; all SSH data is encrypted.
Similarly FTP is obsoleted by SFTP which uses the same SSH encryption with File Transfer Protocol on top.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.