The most common question to ask is what makes VPN more preferable than proxy? It's no secret that you can find as many proxy servers as you want on the Web. That is their major plus but the drawbacks to using them are so serious that you will hardly ever consider using proxy servers again for protecting your personal data when you learn about them.

Here is some evidence:

1. The traffic that comes from you to your subscriber through a proxy server is totally enciphered which means all the data is open for sniffing, that any third party can read it in real time. Usually things like that happen on account of your internet service provider (ISP), your subscriber's provider, or the administrator of your home or corporal network and finally, a trespasser. These factors must be considered.
2. The request issued by your browser to any domain name of the network is initially processed by DNS that retrieve the IP address of this domain name for you. Often such requests go through your proxy server which makes it very easy to locate your physical address.
3. The majority of proxy servers are transparent, which means that they do not conceal your IP address. The headings usually look like these:
   • REMOTE_ADDR = IP proxy you are currently using.
   • HTTP_VIA = IP or the name of the proxy server (the proxy server in use)
   • HTTP_X_FORWARDED_FOR = Your IP address.
   Proxy servers like these are usually available in open access, so watch out!
4. Not all of programs that are compatible with Windows and other OS can work correctly with proxy servers and some are simply incompatible with them.
5. And the last but not the least drawback of proxy servers is that the uptime of public proxy servers is seldom higher than 25% and often the user gets disconnected at the wrong moment.

The traffic tunneling technology [VPN] does not have the above mentioned drawbacks.

Almost any Internet user sooner or later faces the necessity of installing Wi-Fi network, be it at home or in the office. But not all of them are aware that incoming and outgoing traffic can be easily traced. The question goes like this: what are the ways that trespassers use for hacking and what are the respective means of protecting your personal data. Get busy and Google some software that scans and reads the traffic that is around you, as well as WEP and WPA ciphering protocols hacking programs. Today even kids can hack Wi-Fi. Now and try to find instances of hacking 1024bit\2048bit ciphering keys of OpenVPN protocol. This is possible of course, but only as a theory that has never been put in practice.