What is a Virtual Private Network?

A VPN (Virtual Private Network) is a private network that extends through an encapsulation process, and if necessary, encryption of data packets to different remote locations by using public transport infrastructure. Data packets from the private network travel through a “tunnel” defined in the public network.


For remote access, VPN allows users to access their corporate network, assigning your remote computer addresses and privileges the same, although the connection is made ​​through a public Internet access. Sometimes it may be interesting that communication that travels through the tunnel established in the public network go encrypted to allow a greater confidentiality. In the below we describe vpn review for your help.

Advantages and disadvantages of the VPN
The main advantage of using a VPN is that you have a network connection with all the features of the private network to which you want to access. The VPN client fully acquire the status of member of that network, which will apply all security policies and permissions of a computer in the private network, you can access the information posted to this private network: databases, internal documents, etc through a public access. At the same time, all connections to access the Internet from the client computer VPN will be made ​​using the resources and connections that have the private network.

The disadvantages can include: a greater burden on the VPN client since you must perform the additional task of encapsulating data packets once more, a situation that gets worse when it is encryption of the data that produces a further slowing down of most connections. Also produced a greater complexity in the data traffic that can produce unwanted effects by changing the numbering assigned to the VPN client and which may require changes in configurations of applications or programs (proxy, mail server, permissions based on name or IP number).

It is recommended to use the VPN service in those cases in which, having a connection to an Internet access provider, you want to have a single unauthorized access to computers of the delegation or a output to the Internet is more convenient using output lines from the central/delegation.

The use of encryption in the VPN connection may be necessary in those cases where the information that will be passing through the tunnel is sensitive and require privacy. The encrypted VPN connection requires considerable resources in both the tunnel server and the client computer of VPN, besides requiring the installation of special software on the client. It should be remembered that many applications and programs already do this encryption and encrypt the VPN tunnel does not provide additional security.