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12-18-2009, 11:26 AM
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#1
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Member
Registered: Jul 2005
Posts: 78
Rep:
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Exceed xterm connect capability
Hi all -
Another basic question, as I am still new to Linux...
I have a new machine loaded with RHEL 5.2 and when I try to connect into it using EXCEED XDMCP-Broadcast mode from my PC, it never comes up as a selection in the select-list. What rpms, procs, etc. am I missing on my RHEL 5.2 system???
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12-18-2009, 04:27 PM
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#2
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LQ Guru
Registered: Jul 2003
Location: Birmingham, Alabama
Distribution: SuSE, RedHat, Slack,CentOS
Posts: 27,794
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Quote:
Originally Posted by pyroman59
Hi all -
Another basic question, as I am still new to Linux...
I have a new machine loaded with RHEL 5.2 and when I try to connect into it using EXCEED XDMCP-Broadcast mode from my PC, it never comes up as a selection in the select-list. What rpms, procs, etc. am I missing on my RHEL 5.2 system???
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That's because as a rule, running X that way is fairly unsafe. Your X server is running with the "-nolisten" option (do a "ps -ef | grep nolisten"), which means it's not going to accept X requests from anyone but itself.
From the RedHat knowledgebase:
https://www.redhat.com/docs/manuals/...e-remotex.html
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1 members found this post helpful.
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12-18-2009, 05:56 PM
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#3
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Member
Registered: Jul 2005
Posts: 78
Original Poster
Rep:
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If I do that ps cmd, I do not see an "X server" proc
[root@larry ~]# ps -ef|grep nolisten
root 6035 6006 0 15:57 pts/1 00:00:00 grep nolisten
[root@larry ~]#
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12-18-2009, 06:11 PM
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#4
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Member
Registered: Jan 2009
Location: wherever I can make a living
Distribution: OpenBSD / Debian / Ubuntu / Win7 / OpenVMS
Posts: 440
Rep:
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With Exceed, are you connecting via Telnet, or using something like PuTTY?
<edit>
Let me make that more clear...
For me, here, I have Exceed on some of the Windows terminal servers. We use PuTTY to connect via SSH (no Hummingbird SSH yet that I know of), and then when we launch the remote X services (like xclock) it comes back via an SSH-Tunnel.
In PuTTY, you'd need to set 'Enable X11 Forwarding'.
I would have to look up the instructions for Exceed via Telnet, haven't used telnet that way in ages.
Even better doc: http://faq.rutgers.edu/?q=node/836
</edit>
Last edited by MBybee; 12-18-2009 at 06:16 PM.
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1 members found this post helpful.
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12-18-2009, 06:14 PM
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#5
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Member
Registered: Jul 2005
Posts: 78
Original Poster
Rep:
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Right now I just connected to the Linux machine via rlogin from a Sun Ultra 60.
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12-18-2009, 06:37 PM
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#6
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Member
Registered: Jul 2005
Posts: 78
Original Poster
Rep:
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Here is what I do currently:
1. From my PC, I launch Exceed XDMCP-Broadcast and login to an Ultra 60
2. Once on the Ultra 60, I open a cmd tool shell, and rlogin or telnet to the Linux machine.
Here is what I want to do:
1. Launch Exceed XDMCP-Broadcast, and when the DISPLAY MANAGER CHOOSER MENU comes up, I want to see my Linux machine in the pick-list of hosts...
2. Click on that Linux machine
3. Get the Linux-GUI-console-login-screen on my Exceed session console
4. Login and get my desktop and such...
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12-19-2009, 11:37 AM
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#7
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Member
Registered: Jan 2009
Location: wherever I can make a living
Distribution: OpenBSD / Debian / Ubuntu / Win7 / OpenVMS
Posts: 440
Rep:
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Here's a howto for XDMCP: http://www.faqs.org/docs/Linux-HOWTO/XDMCP-HOWTO.html
That being said, I would not recommend using XDMCP broadcasts, telnet, or rlogin on any modern network. These are non-secure services and almost always locked at the firewall and host level in a well-secured network.
Also, you typically don't want to waste server resources running a full X desktop, but that's beside the point.
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1 members found this post helpful.
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12-21-2009, 10:24 AM
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#8
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Member
Registered: Jul 2005
Posts: 78
Original Poster
Rep:
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Hi MBybee -
Thanks for the info, I appreciate it. This lone Linux machine I have loaded is going to soon be moved into a closed area with no network at all - it will be a total sandalone machine. Otherwise, I would be concerned about security, etc.
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12-22-2009, 12:01 PM
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#9
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Member
Registered: Jan 2009
Location: wherever I can make a living
Distribution: OpenBSD / Debian / Ubuntu / Win7 / OpenVMS
Posts: 440
Rep:
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Quote:
Originally Posted by pyroman59
Hi MBybee -
Thanks for the info, I appreciate it. This lone Linux machine I have loaded is going to soon be moved into a closed area with no network at all - it will be a total sandalone machine. Otherwise, I would be concerned about security, etc.
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Ah - well, there you go 
If that handles your issue, you may want to mark the thread solved. That way others with similar issues will be more apt to find it.
Happy Holidays!
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1 members found this post helpful.
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