topic Re: ES3.0 can not telnet to server from windows but can from Other unix in Operating System - Linux

ES3.0 can not telnet to server from windows but can from Other unix

Nick D'Angelo — Mon, 26 Mar 2007 07:28:23 GMT

I have two new ES3.0 machines (DL380) and for some reason, I can not telnet from my windows computer to one of the boxes.

However, I can telnet to it from another 'nix' machine.

Any ideas?

Thanks

Re: ES3.0 can not telnet to server from windows but can from Other unix

Al Licause — Mon, 26 Mar 2007 08:20:31 GMT

How about a few clues.....like....can you ping it from both systems ?

Can you ssh or ftp or gain access by any other means ?

Any errors ?

You haven't provided much information. Don't expect too much feedback.

Re: ES3.0 can not telnet to server from windows but can from Other unix

Nick D'Angelo — Mon, 26 Mar 2007 08:24:42 GMT

Fair enough.

Putty will not work for my account or root's account.

Sftp does work from another unix server but not from windows.

I can ping it from anywhere including windows.

could it be a trust thing?

Re: ES3.0 can not telnet to server from windows but can from Other unix

Jarle Bjorgeengen — Mon, 26 Mar 2007 14:12:07 GMT

Are the windoze box and the ES 3 on the same network ,or put in another way ; are there a router between the two who might have accesslists prohibitng the traffic ?

Else check :

# iptables -L
# cat /etc/hosts.deny
# cat /etc/xinetd.d/telnet
# cat /etc/xinetd.conf

on the RH 3 box.

A nice way to check if the problem lies in the network between (or the local firewall) is to use netcat (nc) in listen mode and use nc on the other side to connect to that port . (Dont know if nc exist for windows though. )

Re: ES3.0 can not telnet to server from windows but can from Other unix

Al Licause — Mon, 26 Mar 2007 14:37:47 GMT

As Jarle pointed out, it could be an iptables issue or a wrappers issue with hosts.* files.

Try running tcpdump on the linux host to see if your request is actually making it from the PC.

You might also check the log files such as /var/log/secure to see if any rejections are being logged.

Do you even get a login screen when coming from the PC ?

Re: ES3.0 can not telnet to server from windows but can from Other unix

J._1 — Tue, 27 Mar 2007 06:33:04 GMT

What version of putty are you using?

Try updating to the latest. The older putty clients don't support the encryption used in updated linux ssh daemons.

Re: ES3.0 can not telnet to server from windows but can from Other unix

Steven E. Protter — Tue, 27 Mar 2007 07:21:05 GMT

Shalom,

by default ES 3.0 disables telnet.

Enable it in /etc/xinetd.d/telnet configuration file and service restart xinetd

SEP

Re: ES3.0 can not telnet to server from windows but can from Other unix

Al Licause — Tue, 27 Mar 2007 10:07:18 GMT

Hello Steven,

I had the same thought initially but since the original query stated that they could telnet from another machine, I assumed that they had a telnet listener setup and working......

To the original statement and the information about the later versions of putty...you might try running the client in debug mode and see if that shows any additional information, unless the desired connection method is simply telnet.

Re: ES3.0 can not telnet to server from windows but can from Other unix

Nick D'Angelo — Tue, 27 Mar 2007 11:19:39 GMT

My version of putty is 0.58.

Re: ES3.0 can not telnet to server from windows but can from Other unix

Nick D'Angelo — Tue, 03 Apr 2007 10:10:40 GMT

Our internal network folks (buggers) changed the dns entry.

I wasted all your time and over a week of my own time, only to find out that it was not my problem at all.

Thanks everyone and for your trouble, I will assign 10 pts each.

Nick