VPN

A virtual private network (VPN) is a technology for using the Internet or another intermediate network to connect computers to isolated remote computer networks that would otherwise be inaccessible.
A VPN provides security so that traffic sent through the VPN connection stays isolated from other computers on the intermediate network. VPNs can connect individual users to a remote network or connect multiple networks together.
For example, a user may use a VPN to connect to their work computer terminal from home and access their email, files, images, etc.
Through VPNs, users are able to access resources on remote networks, such as files, printers, databases, or internal websites. VPN remote users get the impression of being directly connected to the central network via a point-to-point link.

There are a lot service of VPN , some free and some payment.
We reccomend :
-Free :
Autistici : avaiable for all platfor with openvpn.
SecurityKiss: avaiable for all platform, limited 300 MB for day.
Hotspot Shield: avaiable only for windows , limited 1 GB for month.

-Payment :
SecurityKiss : there are a lot type of payment packets, for more details click here
Anonine
VpnTunnel : 5$ for month, unlimited bandwidth, anonymous dynamic ip, encripted connection, no closed ports.