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VIRTUAL NETWORK COMPUTING

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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 ... – PowerPoint PPT presentation

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Title: VIRTUAL NETWORK COMPUTING


1
VIRTUAL NETWORK COMPUTING
SUBMITTED BY- Ankur Yadav Ashish Solanki Charu
Swaroop Harsha Jain
2
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.

3
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

4
  • 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.

5
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.

6
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 .

7
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.

8
  • 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.

9
  • 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.

10
DIAGRAMS
11
DATA FLOW DIAGRAM-
12
USE CASE DIAGRAM-
13
SEQUENCE DIAGRAM
14
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15
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16
SNAP SHOTS
17
SERVER STARTED
This is the page when server is being run on the
server machine.
18
CLIENT STARTED
This is the page when client get started on its
machine.
19
SERVER NAME
This is the page which
is basically opened on the client machine
when it
request for the servers IP address .
20
REMOTE CAPTURING
  • Server Desktop Visible on Client Machine

21
REMOTE CAPTURING
These are the pages when desktop sharing is
successfully done.
22
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.

23
  • 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.

24
HARDWARE and SOFTWARE REQUIREMENTS
  • Hardware Requirements
  • Intel Processor
  • Hard Disk Drives
  • 16MB Ram
  • Software Requirements
  • Operating System(windows 9x)
  • JVM(JDK1.4.1)

25
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.
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