Blogs

XDMCP

XDMCP stands for X Display manager control protocol.

The display system used in Linux was designed from the beginning as a network protocol, where the system and programs run in one computer and the display being shown on another.

The XDMCP protocol allows you to login graphically to a remote computer.

It is not a very fast protocol and these days there are better ways to achieve the same effect in a more efficient manner.

As of Gnome 2.2 and KDE 4 support for XDMCP login on the GDM/KDM login screen was dropped.

SJK pix

Gah. Once again I forgot you can't attach pictures directly to meeting locations.

SJK front

SJK side entrance

SJK on OpenStreetMap

Putty

For different reasons, some people prefer Graphical interfaces, whether it is because because they are more comfortable with them or because they may set-up a non technical person for remote access.

On the past two posts I presented command line tools. These tools require, for the most part, remember cryptic parameters, configuration file locations and unless you script them, you need to enter the whole command every time even if you are doing the same day after day.

The solution: Putty

SSH

The second command in the series is the one I find more useful and versatile so it also will be the longest post.

Different implementations of SSH will have slightly different features. In this case I will focus on OpenSSH.

To install on the server (Debian/Ubuntu):
sudo aptitude install openssh-server

To install on the server (Redhat/Fedora):
sudo yum install openssh-server

To start/stop/restart under Debian/Ubuntu
sudo /etc/init.d/ssh start

Telnet

I'll start this series with the simplest and oldest command.

Remember, it is not safe to expose telnet to the internet.

To install on the server (Debian/Ubuntu)
sudo aptitude install telnetd

To start/stop under Debian
Under Debian, the telnet daemon is started by inetd when the port is accessed. This is controlled by the inetd.conf file. If the telnet line is commented out, telnet will not start, otherwise it will start.

kwlug logo, with text, posted.

 

Was looking for a kwlug logo but didn't find any with text - so cut out the logo and words from mud.jpg (from the tar download available on the resources page: /node/404 ). Here is the result(s).

 

K-W Lug Logo (with words) - /sites/kwlug.org/files/2009-12-15 kwlug logo (with words).jpg

 

Introduction to remote collaboration tutorials

Phew! It's been a week since the KWLUG meeting where I talked about remote collaboration.

Believe or not, I hadn't had a moment, until now, to make good on my promise to post the tutorials on-line.

First I was on Project Management training in Toronto from Monday to Wednesday, then, Thursday and Friday preparing for an implementation at work that kept me at home in front of the computer all Saturday and Sunday.

Ubuntu LoCo

The local Ubuntu group Ralph Janke initiated is here: https://edge.launchpad.net/~ubuntu-waterloo-region.

Remote Collaboration: A successful presentation

It seems that the time was well spent preparing this presentation. I had an awesome and engaged audience that kept with me through out the presentation, even while we were trying to sort the technical limitations of the physical space.

Unfortunately it seems that the webcast wasn't as successful due to the limited bandwidth at the meeting location. Next time I'll use plan B.

If you logged in remotely, please let me know how was your experience. was the sound good? was the screen choppy? What would you like to see for next time?

GNU Screen Slides (Karmic Party)

I will never admit to going to a Linux launch party. No siree. But if I had gone to a hackerspace party and been coerced into presenting something, I might have made some slides like these.

The zip file contains slide sources and configuration snippets. I am puttting them here because I don't want to make an account on the Kwartzlab wiki.

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