topic Re: Unable to telnet a remote SUSE box in Operating System - Linux

Unable to telnet a remote SUSE box

lavs — Tue, 09 Jun 2009 09:09:28 GMT

I am unable to do telnet on suse machine.
It is giving following error message:

Tset: Unknown terminal type tty

We have checked the services on suse machine. It is working fine. But when executing remotely it is giving above message.

Thanks in Advance..

Re: Unable to telnet a remote SUSE box

Michal Kapalka (mikap) — Tue, 09 Jun 2009 09:13:49 GMT

hi,

for security reasoon its better use ssh instead of telnet.

check if the ssh is ok.

mikap

Re: Unable to telnet a remote SUSE box

Torsten. — Tue, 09 Jun 2009 09:36:53 GMT

What terminal emulator you are using?

# echo $TERM

on your server.

Re: Unable to telnet a remote SUSE box

lavs — Tue, 09 Jun 2009 10:23:33 GMT

Torsten...i give the command echo $TERM...its set as "ansi"

Michal...you are right that ssh is good as compare to telnet...but we are doing this operation through vbscript by using a w3socket. Following is the snipt of code...

Set obj=CreateObject ("socket.tcp")
obj.DoTelnetEmulation=True
obj.TelnetEmulation="TTY"
obj.Host=systemIP&":23"
obj.Open
obj.WaitFor "login:"
obj.SendLine user
obj.WaitFor "password"
obj.SendLine pwd
obj.WaitFor "$"
obj.SendLine strCommand
obj.WaitFor "$"
obj.Close
set obj=Nothing

Re: Unable to telnet a remote SUSE box

Michal Kapalka (mikap) — Tue, 09 Jun 2009 10:30:34 GMT

hi,

try tu set the terminal in vt100

mikap

Re: Unable to telnet a remote SUSE box

lavs — Tue, 09 Jun 2009 10:40:44 GMT

thanks Mikchal for ur quick reply...but i didn't get that how to do these settings..can u explain me in bit detail....

Re: Unable to telnet a remote SUSE box

Michal Kapalka (mikap) — Tue, 09 Jun 2009 10:52:01 GMT

hi,

if you are using BASH as default shell on linux

them setup this

in the file ~/.bash_profile or .bashrc

add this line :

export TERM=linux ( or vt100 )

and them logout or use source and the edited file.

mikap

Re: Unable to telnet a remote SUSE box

lavs — Tue, 09 Jun 2009 10:59:22 GMT

hi

I have set the line "export TERM= vt100" in .bashrc file. But still getting same error. BASH is not default shell of this machine.

Re: Unable to telnet a remote SUSE box

Steven E. Protter — Tue, 09 Jun 2009 16:15:36 GMT

Shalom,

I would try setting term to vt100 or vt220 and see if that helps.

This should be set up with the application you are connecting with.

Or: You could stop using telnet which authenticates in clear text and use a ssh client like putty

SEP

Re: Unable to telnet a remote SUSE box

macosta — Tue, 09 Jun 2009 22:06:12 GMT

In your VB script, it's setting the emulation to "TTY," which a login script on the remote machine doesn't seem to like (or more accurately, tset doesn't like.)

I'm not sure what the valid values are, but you'll need to change the TelnetEmulation variable to something like VT100.

Re: Unable to telnet a remote SUSE box

lavs — Wed, 10 Jun 2009 03:26:13 GMT

thanks Macosta...i think its working....

Re: Unable to telnet a remote SUSE box

Ram_975310 — Mon, 04 Feb 2013 04:25:53 GMT

Hello

I am also getting the same error message. Please could you tell me how to get the correct correct emulation variable.

Thanks in advance.

Ram