how to use telnet command in linux

manoj45yadav · 09-01-2010, 02:52 PM

help ..pls give some idea about it.

AlucardZero · 09-01-2010, 02:59 PM

Run the "telnet" command. See "man telnet" for usage information.

mrlinux11 · 09-02-2010, 01:01 PM

telnet Hostname [port Number] Port Number is optional by default it goes to port 23

The telnet is used to connect to remote hosts using a command line interface (mostly Linux/Unix)
In order to use telent the server must have a telnet server running.

NOTE: This program is not very secure, it sends USERID/Password across the network in plain text.

TB0ne · 09-02-2010, 02:22 PM

Quote:

Originally Posted by manoj45yadav

help ..pls give some idea about it.

Spell out your words. And have you tried to look this up?? Google has lots of information, as do the man pages. Try both.

Basic usage:
Type in "telnet"...press ENTER.

varunb · 03-01-2012, 01:30 AM

I am using opensuse 12.1, also knowinly this is old thread but still wanted to subscribe to this thread.

where do i find telenet logs????

i tried with debug option -d in command prompt, i am ale to login to exchange server, but my username login is gettin failed!!!!

Code:

varun:~ # telnet -d exchange.logix.in 143
Trying 115.112.241.110...
Connected to exchange.logix.in.
Escape character is '^]'.
* OK exchange.logix.in IMAP4 service is ready. .
? LOGIN varunb@xxxx.com xxxxx
? NO LOGIN failed.

i am pretty sure that username and password are correct!!! Also i am able to login through webmail!!!
i.e http://exchange.logix.in

any idea on this????

TB0ne · 03-01-2012, 10:21 AM

Quote:

Originally Posted by varunb

I am using opensuse 12.1, also knowinly this is old thread but still wanted to subscribe to this thread. where do i find telenet logs???? i tried with debug option -d in command prompt, i am ale to login to exchange server, but my username login is gettin failed!!!!

Code:

varun:~ # telnet -d exchange.logix.in 143
Trying 115.112.241.110...
Connected to exchange.logix.in.
Escape character is '^]'.
* OK exchange.logix.in IMAP4 service is ready. .
? LOGIN varunb@xxxx.com xxxxx
? NO LOGIN failed.

i am pretty sure that username and password are correct!!! Also i am able to login through webmail!!! any idea on this????

Don't reopen old threads..this has been closed for two years about a different issue.

There are no 'telnet logs' for client sessions, only for a telnet server. Even then, it would only cover what you set up when you run the telnet daemon, and what syslog events you tell it TO log.

Also, you do realize that you're trying to telnet into the IMAP server port above, right?? That won't really work, except for a VERY basic test, which is what you've done. If you were trying to verify that IMAP was available on that server, you've done it. If you're trying to get a terminal session running, you have to telnet to the telnet service port, which is typically 23.

varunb · 03-01-2012, 11:31 PM

Quote:

Originally Posted by TB0ne

Don't reopen old threads..this has been closed for two years about a different issue.

There are no 'telnet logs' for client sessions, only for a telnet server. Even then, it would only cover what you set up when you run the telnet daemon, and what syslog events you tell it TO log.

ok. well opened this thread where answer to the topic continues and also if others faces this kinda problem,
they can easily find the answers as well(while googlin too)!!!!

and about the telnet, oooopzz there should have been logs rite???at the client side also!!!!

Quote:

Originally Posted by TB0ne

Also, you do realize that you're trying to telnet into the IMAP server port above, right?? That won't really work, except for a VERY basic test, which is what you've done. If you were trying to verify that IMAP was available on that server, you've done it. If you're trying to get a terminal session running, you have to telnet to the telnet service port, which is typically 23.

I refered this below URL

http://support.microsoft.com/kb/189326

Yes i am tryin to connect to IMAP server, and i was just testing my user login!!! actually i was not able to login through thunderbird email client!!! i was getting a error like login to exchange server failed!!!

so i was trying to telnet the same username!!!
but it was not happenin!!! And also i found out a strange issuse of this cause, it was through our office firewall!!!

anywayz now its workin and also telnet is happenin!!!

Code:

varunb@varun:~> telnet exchange.logix.in 143
Trying 115.112.241.110...
Connected to exchange.logix.in.
Escape character is '^]'.
* OK exchange.logix.in IMAP4 service is ready. .
? LOGIN varunb@XXXX.com <password>
? OK LOGIN completed.
? LIST "" "*"
* LIST (\HasNoChildren) "/" Archives
* LIST (\Marked \HasNoChildren) "/" Calendar
* LIST (\HasNoChildren) "/" Contacts
* LIST (\Marked \HasNoChildren) "/" "Deleted Items"
* LIST (\HasChildren) "/" Drafts
* LIST (\HasNoChildren) "/" Drafts/DATES
* LIST (\HasNoChildren) "/" Drafts/documents
* LIST (\Marked \HasNoChildren) "/" INBOX
* LIST (\HasNoChildren) "/" Journal
* LIST (\HasNoChildren) "/" "Junk E-Mail"
* LIST (\HasNoChildren) "/" Notes
* LIST (\HasNoChildren) "/" Outbox
* LIST (\HasNoChildren) "/" Sent
* LIST (\HasNoChildren) "/" "Sent Items"
* LIST (\HasNoChildren) "/" Tasks
* LIST (\HasNoChildren) "/" Trash
? OK LIST completed.

* BYE Connection closed. 14
Connection closed by foreign host.
varunb@varun:~>

TB0ne · 03-03-2012, 04:36 PM

Quote:

Originally Posted by varunb

ok. well opened this thread where answer to the topic continues and also if others faces this kinda problem,
they can easily find the answers as well(while googlin too)!!!!

and about the telnet, oooopzz there should have been logs rite???at the client side also!!!!

No, there aren't client logs for telnet, anymore than there are for FTP, SSH, etc. Logs are maintained for SERVER components, not clients. The only way you would ever get any sort of client-side log, is if you ran the command through sudo.

Quote:

I refered this below URL

http://support.microsoft.com/kb/189326

Yes i am tryin to connect to IMAP server, and i was just testing my user login!!! actually i was not able to login through thunderbird email client!!! i was getting a error like login to exchange server failed!!! so i was trying to telnet the same username!!! but it was not happenin!!! And also i found out a strange issuse of this cause, it was through our office firewall!!!

anywayz now its workin and also telnet is happenin!!!

Again, please spell out your words. And it would have been nice if you bothered to provide this information to begin with, such as the firewall being in place, what you were trying to test, etc. All you posted initially was you were trying to telnet to port 143, and it failed after initial connection.