Free Open Source Computer Lab Monitoring Software Using vnc

Background:

I teach in a PC vnc computer lab. As a teacher, I need to help and observe all of the computers at the same time. For Mac OS X there is a great piece of software called Apple’s Remote Desktop. On the teacher’s computer monitor it presents a live scaled-down view of all of the computer screens in the lab. The teacher can watch all the students doing work and when necessary, focus in on one computer and move that computer’s cursor with their own mouse.

For PC/Windows labs there is a program called vnc which allows one computer to watch and control another computer. Unfortunately, viewing is intended to be only one at a time. But, the great thing about vnc is that it is a free open source project, which means anyone can use it and improve it.
Viewer & Servers:

There are two parts to vnc, a Server program and a Viewer program. The Server program shares a computer’s screen over a network. The Viewer program connects to a server and redraws the remote computer’s screen on it’s monitor. Because the software is split this way, watching multiple computers at the same time just entails creating a bunch of (small) vnc Viewers within a single program. No modifications need to be made to the Server and minimal changes to the Viewer.

I wrote VncThumbnailViewer in Java to make use of TightVNC‘s java vncviewer. The VncViewer code is pretty modular, so creating a program that contains vncviewers wasn’t too complicated.

More info at VNC on Mac, we clearly
More info at VNC & HTML5: Display the remote desktop via a web browser with Guacamole

For all directors is very handy to have a remote access to their systems. Ultr @ vnc, which I introduced here, is a great utility with many features, geared to Windows users. The approach is “a la PCAnywhere”, unlike the Windows remote desktop connection. Species may be useful in some cases: for example, when the other side there is someone who should see what we do, or when you want to interact with the shell of Lotus Domino (and do not want to use the live console).
Since Ultr @ vnc allows full access, the security implications must be understood and properly managed.

Ultr @ vnc communicates “clear”, which means that communications are not encrypted by default. In theory, an attacker who had access to communication between a server and a client Ultr @ vnc, might steal session data.
There are two main implications to be considered, using Ultr @ vnc in an environment where security is important:

* Encryption – Encrypted communication make the interception of data much more dificult
* Authentication “strong” – Provides a mechanism to determine with greater certainty (more than just the password), that vnc only authorized clients can connect to the server.

Read related article at Reviewed application Droid VNC server for Android by Julyano87
Full story is here VNC Viewer for Android released

already present in the core of our ESXi, specifying a password, a port for

each of the VM and logically enabling the vnc service.

Procedure (from Carry out each vnc of the VM for which you want skilfulness this feature):

1) Make the Power Off Virtual Machine.

2) Connect to the server via SSH or using the VMware ESXi Hidden Console (alt + F1) if you are physically on the server.

3) Posizionari inside the following path: / vmfs/volumes/datastore1/CentOS 64bit (in this case we are performing the operation on a CentOS 64-bit).

4) Edit the file. Vmx, in this case called: CentOS 64bit.vmx (ESXi provides you with “you” as an editor).

5) Add at the end of this file the following lines of code:

remotedisplay.vnc.port = “port”

remotedisplay.vnc.enabled = “true”

remotedisplay.vnc.password = “password”

Replace the values ​​”Ports” (to use a different port each VM) and “password” with those you deisiderati. example:

remotedisplay.vnc.port = “5901″

remotedisplay.vnc.enabled = “true”

remotedisplay.vnc.password = “esxiVnCView”

6) Exit and save (in vi press Esc and type: wq).

7) Carry out the Power On the VM.

Use a vnc client to connect to the vnc port of your virtual machine by inserting ESXi server IP (not the specific VM) and the specified port (different for each VM)) in the file. Vmx.

More detail from here In VMWare ESXi you can connect to each virtual machine via a VNC server
Read related article at In VMWare ESXi you can connect to each virtual machine via a VNC server

What is vnc Free Edition?

VNC Free Edition is a computer program used to remotely control another computer.
vnc Free Edition is a Freeware software category, program you can download for free through our website by clicking on the link and free download which is below in this page.
With vnc you can see the desktop of another computer connected to an intranet or Internet connection.
More information about the program vnc Free Edition and a link vnc to download the free software you can find details by clicking the VNC Free Edition »»
vnc is very useful when you want to put the work in the home PC, or vice versa, to see some data.

Read the full story here VNC Free Edition for free download
Read the full story here VNC Free Edition for free download
Read the full story here VNC Free Edition for free download

There are many applications on the AppStore that allow us to access our Mac and PC vnc directly from the iPhone.

For those who need access to your PC / Mac even when you are away from home and 3G network, we have many choices available. Some of these use the HTTP protocol (ie with proprietary applications), others use the vnc protocol (which will need a router side configuration).

We iPhoneItalia we tried to select five of these applications and to compare them in a unique video.
Any application that we have selected provide access via WiFi or via the 3G network. In addition, all cross-platform: we can use them regardless of the operating system.
The video is of iPadItalia in this article.
Enjoy it.

Read related article at The best applications to connect remotely via iPhone VNC
More info at The best applications to connect remotely via iPhone VNC

vnc stands for Virtual Network Computing. This is a protocol originally developed by the research laboratories of Olivetti and Oracle, and,
later, vnc developed by AT & T, which displays the desktop of a remote computer and interact with it.

The protocol has, in fact, the function of carrying the graphical interface from a computer, called server,
a computer that has installed a component called the viewer (viewer).

In support of their view of the remote desktop there is the possibility of interaction via the local keyboard and mouse and,
in many vnc programs, even to exchange files, interact with chat.

vnc programs I mentioned, as from the original product, now abandoned by AT & T, vnc has developed several programs, some commercial,
some open source, generally similar characteristics.

The beauty of vnc is a product to be “cross platform”, so you can use on different operating systems (Windows, Linux, Unix, MacOS). different.

The basic protocol uses TCP port 5900 and, in the case of multiple servers on the same IP, other neighbors, and port 5800, and adjacent,
if you wanted to use a Java viewer that allows remote control from a browser.

Full story is here VNC for remote management of computers

We begin by clarifying that with vnc does not mean a particular program, but a category of programs that allow remote control of a computer.
The acronym stands for Virtual Network Computing vnc and the common feature is the use of such software RFB protocol, Remote Frame Buffer.
In this article we use a vnc server on a Linux system on a Windows system. The information provided will be helpful, however, in any case configuration.

The scheme is simple: on the one hand to control the computer on which to install the vnc server, the vnc computer controlling the other hand using the client component,
the so-called viewer. The two machines can be connected via a private LAN or through the public Internet.
In the latter case the work is likely to be more burdensome for the need to configure other devices such as firewalls and routers.

If the workstation client establishes a connection to the server will see the desktop of the remote machine in a window of the program.
We can act on it directly with your keyboard and mouse as if we were our physically sitting at the computer.
The cool thing about this is that the operating systems involved in communication can be different: Linux, Windows or MacOSX.
We could control a Windows 2003 server on our Linux box, or, conversely, a Linux server from a Windows XP station.

Read the full story here VNC: how to manage servers remotely
More info at VNC: how to manage servers remotely

If you read the article on vnc client free for all major operating systems, you’ll quickly realize that Mac OS X does not offer the wide selection they offer other operating systems (Linux in particular), and that in fact most of the software outstanding are paid.

Well, what (perhaps) did not know is that Mac OS X has everything you need to connect to a vnc server and therefore does not require third-party applications (except special needs, that is).

Those jokers Cupertino fact have taken steps to integrate the default vnc client, but they thought it best to leave it in the vnc shade, away from prying eyes. However, given the usefulness of the application to see how the case has cast it as necessary and put on display between applications. All this after having admired this

Check the full detail here Discover the VNC client built into every Mac Free
More info at Discover the VNC client built into every Mac Free
Read related article at Discover the VNC client built into every Mac Free

vnc Viewer connects your iPhone, iPad or iPod touch to a computer anywhere in the world.

vnc Viewer Enables you to take remote control of a computer from your iPhone, iPad or iPod touch. View the desktop, run applications,
change settings, and access data Exactly As You Would Be permitted to do were you sitting in front of the computer, keyboard and mouse and using the ITS.

VNC Viewer is a member of the vnc Enterprise Edition 4.x family, Providing proven enterprise-class security. It can connect to Any Windows,
Mac OS X, Linux, or UNIX computers running vnc-compatible server. Recommends RealVNC vnc Enterprise Edition for robust, secure,
and high-performance connections, and unrivaled Flexibility for vnc ITS.

Full story is here vnc Viewer for iPhone OS ®
More info at vnc Viewer for iPhone OS ®
Check the full detail here vnc Viewer for iPhone OS ®