VPN which can be expanded as Virtual Private Network which makes use of public telecommunication i.e. internet to serve office which is remote in nature to people. So, that they can access it securely to the network of their organisation. It is of very low cost that can help a business achieve its desired goal. An organisation by taking VPN can reduce the work load of its employees in office hours as it helps them to continue their work at home too. So, if an employee has got VPN access at his home, he doesn’t need to work overtime in the office. He can complete his work after reaching home at his convenience.
VPN technology lets a corporate office to connect with its different branches at same time. It is basically designed to issues of address which is surrounding the present business trend to increased telecommuting and global distribution which is widely distributed, where employees should be able to connect to resources which are general in nature and they should be able to respond to each other.
No other technology can provide this kind of necessary scalability, neither in terms of price nor in terms of its flexible administration as well as its demand for connections too. So, It makes sense to replace all the modern pools and other private network infrastructure with such a low cost internet remote access solution based technology so that an organisation can only look after its objectives in the competitive market to achieve its desired goal. Today, there are many Internet Service Providers (ISPs) and VPN servers that can help one to fulfil his needs by serving the remote networking for thousands of people or to offices too.
VPN can serve remote access to corporate so that they can communicate with their remote branches by maintaining their privacy of information. Today many users call a local ISP in respect of calling long distance corporate or network access server (NAS) which has been outsourced. With the help of a local ISP, a vpn software can create virtual private network in between a dial up user and a corporate vpn server over the internet.
There are two methods by which a local area network at remote sites can be connected with the help of VPN. First is by using a dedicated line that can help in connecting a corporate LAN to its branch office. The second method of connecting a corporate LAN to its branch is by using a dial up line which can help one to call to a distance of max. 1800 with the help of local ISP.