VIRTUAL NETWORK COMPUTING

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VIRTUAL NETWORK COMPUTING
SUBMITTED BY- Ankur Yadav Ashish Solanki Charu
Swaroop Harsha Jain
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WHAT IS VNC

• In computing, Virtual Network Computing (VNC) is
  a graphical desktop sharing system to remotely
  control another computer. It transmits the
  keyboard and mouse events from one computer to
  another, relaying the graphical screen updates
  back in the other direction, over a network.

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Continued

• VNC is platform-independent a VNC viewer on one
  operating system may connect to a VNC server on
  the same or any other operating system. There are
  clients and servers for many GUI-based operating
  systems and for Java. Multiple clients may
  connect to a VNC server at the same time.
• Popular uses for this technology include remote
  technical support and accessing files on one's
  work computer from one's home computer, or vice
  versa

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• A VNC system consists of a client, a server, and
  a communication protocol.
• The VNC server is the program on the machine that
  shares its screen. The server passively allows
  the client to take control of it
• The VNC client (or viewer) is the program that
  watches, controls, and interacts with the server.
  The client controls the server.

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OBJECTIVE

• It is a graphical desktop sharing system.
• It allows user to simultaneously use two
  terminals
• It is very useful in all places where people
  working at different terminals need to access
  other terminals for various purposes.

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EXAMPLE

• For example, the team members of a software
  development team can access to each other work on
  their desktop if connected over a network even
  they are not present physically with each other .

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WORKING

• The project contains two modules. The Client side
  and Sever side.
• The Client side from where user can operate
  sever/remote machine. The server is considered as
  remote machine.

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• The sever start execution and waits for
  connection with some client. When the client
  start it requires the IP address of Server/
  Remote machine. After getting IP address the
  connection between and remote machine is
  established.
• First the server captures the desktop and send
  to client with some processing.

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• The client receives image and display it because
  of that the user can see remote machine desktop.
• Now when user does some operation events are
  created which then transferred to the server
  side. The server receive event and fires it on
  its desktop or machine so whatever user does at
  the client side is reflected at the sever side as
  appropriated action performed on the sever side.
  The server send back the new desktop with to some
  changes to client side.

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DIAGRAMS
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DATA FLOW DIAGRAM-
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USE CASE DIAGRAM-
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SEQUENCE DIAGRAM
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SNAP SHOTS
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SERVER STARTED
This is the page when server is being run on the
server machine.
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CLIENT STARTED
This is the page when client get started on its
machine.
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SERVER NAME
This is the page which
is basically opened on the client machine
when it
request for the servers IP address .
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REMOTE CAPTURING

• Server Desktop Visible on Client Machine

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REMOTE CAPTURING
These are the pages when desktop sharing is
successfully done.
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FUTURE ENHANCEMENT

• The project can be enhanced to run the
  applications on the client/Server machine.
• Currently the project is restricted to only one
  client machine. The project can be enhanced to
  contain screens of more than one client/Server.

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• This project can be enhanced to send an
  acknowledgement to the server machine to let the
  server know the whether the image was
  successfully received by the client.

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HARDWARE and SOFTWARE REQUIREMENTS

• Hardware Requirements
• Intel Processor
• Hard Disk Drives
• 16MB Ram
• Software Requirements
• Operating System(windows 9x)
• JVM(JDK1.4.1)

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CONCLUSION

• The VNC protocol provides an excellent,
  lightweight means of remotely controlling GUI
  COMPONENTS.
• It is available on multiple platforms.
• It has a number of performance features,
  including enable detection of line speed and
  selection of compression appropriate to the
  connection.
• Some implementations offer integration into the
  host operating system for user authentication
  purposes.
• However, VNC is not a secure protocol, and care
  must be taken to avoid compromise of a machine
  running VNC, and possibly the entire network once
  a single machine is compromised.