IPSec. Probably the best supported and most widely used protocol, IPSec is rapidly becoming the standard for VPNs. IPSec, which the Internet Engineering Task Force (IETF) developed, consists of multiple subprotocols; each handles a different element of the process, and some are optional or interchangeable. IPSec is a broad specification, and vendors' IPSec implementations differ. Make sure you read the fine print to understand what parts of IPSec a product uses.

Cost - VPNs aren't too pricey, but they vary from vendor to vendor. If your main concern is price, then go with something inexpensive, or free - like Spotflux Premium VPN or AnchorFree HotSpot Shield Elite. By all means, try a free server but they do have a few drawbacks since they attract a lot of users. Free servers are often slower, and since most are ad-supported, they place adverts on the online pages you access. Others can even limit the speed of your connection, as well as your online time or amount of data transferred.
Hide Your Browsing Activity From Your Local Network and ISP: If you’re using a public Wi-Fi connection, your browsing activity on non-HTTPS websites is visible to everyone neraby, if they know how to look. If you want to hide your browsing activity for a bit more privacy, you can connect to a VPN. The local network will only see a single, secure VPN connection. All the other traffic will travel over the VPN connection. While this can be used to bypass connection-monitoring by your Internet service provider, bear in mind that VPN providers may opt to log the traffic on their ends.
VPN is an excellent choice in order to obtain the necessary data protection, as well as freedom and anonymity while surfing the Internet. When choosing a VPN provider, be sure to pay attention to some features that will help you find exactly the VPN that you need. For you, we have collected the main factors that need to be taken into account when selecting personal VPN services:
The VyprDNS technology, as the name implies, focuses more on the unblocking aspect of websites. It adds a secure and personalized DNS into your computers’ readable address. This allows you to fool websites by bypassing their geo-restrictions, hence defeating DNS-censorship.  Pricing starts at $9.95 monthly, but if you opt for the yearly plan, you only pay $5.00 monthly. This totals to only $60 annually!
Mobile VPNs are designed and optimized to ensure a seamless user experience when devices are switching networks or moving out of coverage. It generally has a smaller memory footprint, and because of that, it also requires less processing power than a traditional VPN. Therefore, it enables your applications to run faster while the battery pack is able to last longer.
At $7.50/month and $58.49 for a year, they're obviously trying to move you towards their yearly program. We awarded the company points for Bitcoin support, and their money-back guarantee. We're a little disappointed that they only allow a 7-day trial, rather than a full 30-days. The company is generous, with five simultaneous connections. They also picked up points for their connection kill switch feature, a must for anyone serious about remaining anonymous while surfing. 
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