spacer
Read + Write + Report
Home | Start a blog | About Orble | FAQ | Blogs | Writers | Paid | My Orble | Login
Tech Toes

follow this blog
23 followers
84 daily readers
rank of 535
spacer

E-mail Subscription

Receive an e-mail notification of new posts on this site:

Sponsors
Recent Posts
spacer
What Is A VPN?
spacer
Types Of RFID Tags
spacer
Types Of Routing Protocols
spacer
Who Needs IPv6?
spacer
Different Types Of Cranes
spacer
Monitors And Monitor Types
Top Inventions Of 21st Century
Top Inventions Of The 20th Century
Autonomous Warehouse Robot System (Kiva Systems)
Biofuel And Its Types
Electric Wheelchair
RC Toys
What Are Quantum Computers
WiTricity
Blackberry Curve 8520 Gemini
The Worlds First Affordable,Zero-Emission Car
How To Remove Trojan Virus
N97 Smart Phone
How To Find IP?
Fiat 500

more ]


Members
  • spacer  hassam

Apply to write for this Site


Popular Posts
Types Of RFID Tags
Who Needs IPv6?
Different Types Of Cranes
What Is A VPN?
Monitors And Monitor Types
Types Of Routing Protocols

more ]


Archives
December 2011
October 2011
August 2011
June 2011
April 2011
March 2011
January 2011
November 2010
September 2010
July 2010
May 2010
March 2010
January 2010
November 2009
October 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008

more ]


Blogroll
Hubpedia
Hubpages
Free Games


What Is A VPN?

December 24th 2011 20:22
spacer
Encryption of packets requires extensive resources, corporate environments use, dedicate hardware devices to provide power to handle IPSec encryption. Juniper's SSG is one of the widely used security devices in the market.


People who have used a VPN service to access blocked websites in their offices or school campuses, might just know that a VPN is simply a way to anonymously surf the internet. But a VPN has much more to it, infact it has come up as the most secure way to connect with each other on the Internet, no matter where your location is.


VPN stands for Virtual Private Network. It is simply a virtual connection over the Internet between two sites. As we all know that the Internet is a network of networks where millions of nodes are interconnected all talking to each other using different type of circuits. In order to transfer data to another remote workstation through the Internet, you can imagine how many routes the packets have to take before reaching the destination.

Therefore anybody in the intermediate network can sniff the packet and extract all the critical data out of it. Therefore there should be some way of protecting the data. We use the 'https' service for accessing confidential data on the internet, but how about encrypting the data at much lower levels of the OSI layer to allow communication between many nodes just like we do in a local area network.

This is what a VPN does! It basically encrypts the IP packet using the IPSec suite of protocols, which provides a mechanism of authentication and encryption of IP packets on the Network layer of the OSI layer model along with other encryption mechanism on top of it. These mechanism are the Secure Socket Layer (SSL) and Transport Layer Security (TLS) at the Presentation layer; the same mechanism is used for encryption of the Https service.


This full proof security of VPN allows you to connect with different nodes on the Interent just like you do locally, it is infact considered a type of WAN where different offices are now connecting there branches over cheap and high speed DSL connections using VPN. However a dedicated circuit is till established over several of the WAN technologies as they provide what is called as a Service Level Agreement (SLA) to deliver a guaranteed bandwidth and uptime, which is not available with a DSL connection.
10
Vote
Add To: spacer spacer spacer spacer spacer spacer


spacer    
subscribe to this blog 


spacer    
follow this blog on Orble 

spacer    
start your own blog 

[ Link ]
Posted By: hassam - Category: No Category
Related Posts:
Relate This Post

Recent Posts:
      What Is A VPN? 
      Types Of RFID Tags 
      Types Of Routing Protocols 
      Who Needs IPv6? 
      Different Types Of Cranes 
[ Next - Types Of RFID Tags ]
gipoco.com is neither affiliated with the authors of this page nor responsible for its contents. This is a safe-cache copy of the original web site.