When Internet first appeared, a few could assume that it would develop with this speed, both in terms of number of users and speed of internet connection.
That growth however wasn’t in same time followed by countries law regulations. Because of it, with time, huge differences began to appear in terms of using internet, which were different from country to country.
Many of those countries introduced laws which limited their citizens access to specific Internet resources (networks, sites, user services, etc.). Considering that the basic idea of creating Internet was free exchange of information and access to same, laws like this were conflicted with purpose of Internet existence. This caused the appearance of users who wanted complete internet freedom without restrictions on one side, and laws which imposed different prohibitions on specific internet resources on the other.
Aside from that, there is one more important fact which imposes: considering that internet providers have a possibility of keeping track of complete behavior of their users, we come to a conclusion that there is an increased amount of people who want protection of their privacy and anonymous surfing.
Also many organizations looking to expand their networking capabilities and reduce their costs which is today very important.
It is clear that the solution that is imposed as the best is Virtual Private Network.
What is VPN?
A VPN or Virtual Private Network is a private, secure, communication tunnel between two or more devices across a public network such Internet. One benefit derived from using a VPN is that the "tunnel" protects your data from being "overheard" as it passes over the public Internet. Another is that, when using a VPN connection, your computer "appears" on the campus network as if it were on campus.
These VPN devices can be either a computer running VPN software or a special device like a VPN enabled router and allows your home computer to be connected to your office network or can allow two home computers in different locations to connect to each over the Internet.
For security it uses features like encryption, encapsulation, authorization and tunnels. VPN have great secure level because encryption is very strong from 128bit – 2048bit and that is the main reason why they becoming increasingly popular with their many benefits.
A VPN server is a piece of hardware or software that can acts as a gateway into a whole network or a single computer. It is generally always available and listening for VPN clients to connect to it. This enables any user to access a Private Network securely from anywhere in the world as long as an internet connection is available and the private network provides the user the access to its resources. VPN also allow employees to access information from remote locations, making collaboration possible even when employees are scattered around the globe which can significantly reduce costs of any company.
Types Of VPN
Several computer network protocols have been implemented specifically for use with VPN tunnels. The most popular VPN tunneling protocols are PPTP, L2TP and IPsec.
Point to point tunneling protocol (PPTP) is an extension of the pre-existing PPP or point to point protocol. It is the technology that allows the private transmission of data via a public network such as the internet. PPTP is best suited for the remote access applications of VPNs, but it also supports LAN internet-working.
The Layer 2 Tunnel Protocol (L2TP) is an emerging Internet Engineering Task Force (IETF) standard that combines the best features of two existing tunneling protocols: Cisco's Layer 2 Forwarding (L2F) and Microsoft's Point-to-Point Tunneling Protocol (PPTP).
IPsec (Internet Protocol Security) is a security protocol that provides encryption and authentication over the Internet. It can be used as a complete VPN protocol solution or simply as the encryption scheme within L2TP or PPTP.
Speculation About VPN Future
Experts predict that the VPN will continue to grown in popularity as businesses to save money on remote network access for employees. There is many reasons that predict great future for VPNs:
• Works for PC on Windows /Linux/Mac OS
• Works for mobile on Android/Windows/Mobile/iPhone/Blackberry/Symbian
• High level of SSL encryption
• Work over any type of Internet connections (Cable, DSL, dial up, Satellite, Wi-Fi, etc)
• Eliminating the need for expensive long-distance leased lines
• Reducing long-distance telephone charges
• Offloading support costs
• Minimum hardware requirements
• Can provide you with dedicated IP address with which people protect their privacy and surf anonymous without provider logs
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