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The internet censorship has become a common practice for a number of countries such as the republic of china, Iran and the countries with no democratically elected leaders. Citizens and inhabitants of those countries are heavily monitored while they are surfing on the internet. The authorities or governments of those countries, prohibits the respective citizens to access the websites that are considered mobilizing negative promotions against the authority of respective country. For this reason the peoples of china cannot access the international service and servers of Google. In the similar way, the Iranians are restricted to access the websites of American media houses. Several Arab countries also practice this. However, the days of restriction has come to an end thanks to the personal VPN services delivered by numerous servers. How the censorship is implemented The censorship is implemented by detecting the destination IP associated with the data packets on transmitted over internet. Every computing device needs an IP to operate on the internet. To connect to the website of Google, your computer has to send a request and necessary data to the server of Google. For this, the data packets, sent by your computer, contain the IP of Google; your computer handles the insertion of IP into the data packets. While traveling on the internet, towards the Google’s server, the censoring authority captures every data packets and verifies the destination IP written on the packets. The data packets with Google’s IP are never allowed to leave the border of china and thus Google’s service cannot be reached by the Chinese people. Every internet gate way inside china is actively monitored 24/7 by automated software; therefore, no data packets with Google’s IP are able to leave china. In the same way, Iran blocks the websites by restricting the IP associated. Personal VPN for dodging the censorship Personal VPN is a kind of networking methodology that employs encryption to communicate over the internet. A VPN server is required for this, which controls the encryptions. In a personal VPN, the personal computing device connects to the VPN server using the IP of that server. Every data packets that are exchanged between the VPN server and the personal device are made encrypted before transmission over the internet. The censoring authority can only read the IP only, not the content of data packets. While any one form the land of china uses a VPN to access the international version of google.com , the data packets along with the IP of Google is encrypted and the entire encrypted packet is sent put inside another data packet that contains the IP of VPN server . Then the packet is sent to the VPN server. The watchdog software on gateway of china, find that a packet is being sent to a server that is not in the black lists and thus let the packets go. Those packets are received by the VPN server; instantly the actual packet is decrypted by VPN server and sent to the Google’s server. The Google sever responds to VPN server with a set of data packets. Each of those packets are encrypted and sent back to the user sitting in china. The Chinese watchdogs again fail to detect the Google’s IP because of encryption and let the packets go. The personal device of the Chinese person decrypts the received packets and displays the info sent by google.com, the server Chinese authority is trying to block. The process may seem difficult to you, but those difficulties are managed by the computing devices; the users can not feel any trace of the background process. For being successful in this process, the VPN servers must be located outside of the censoring territory, such as china or Iran. The SurfsentryVPN.com is a site that operates several VPN servers in USA and Europe. By subscribing the personal VPN services of those servers, the censorships can easily be denied. Author frequently writes about VPN service. You can read more about Surf Sentry VPN
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