We tested NordVPN and found that it works well with Netflix and other streaming services that block most other VPNs. It is compatible with all devices, does not retain logs, and offers a 30-day money-back guarantee (it's real, we checked). With a price so low, it's no wonder NordVPN is the most popular VPN out there, used by technology experts all around the world.
Latency: This is closely tied to proximity, but is also affected by the amount of traffic on the networks between you and the VPN server. Latency measures the time it takes to send and receive a request from a server, also called ping time. Many VPN apps will allow you to see which server offer the least latency, usually measured in milliseconds. If not, you can connect to the server and use a terminal or command prompt to ping a website and view the time.
There is a PPTP control connection between the IP address of the PPTP client using a dynamically allocated TCP port and the IP address of the PPTP server using the reserved TCP port 1723. The PPTP control connection carries the PPTP call control and management messages that are used to maintain the PPTP tunnel. This includes the transmission of periodic PPTP Echo-Request and PPTP Echo-Reply messages to detect a connectivity failure between the PPTP client and PPTP server. PPTP control connection packets consist of an IP header, a TCP header, a PPTP control message, and a data-link trailer and header as shown in the following figure:

You've heard the advice before: Whether you're in the office or on the road, a VPN is one of the best ways to protect yourself on the internet. But how effective are VPNs? What's the best one for you? What are the downsides? Our executive guide aims to answer all your VPN-related questions -- including a few you probably haven't thought about before.
Trust and transparency issues are the foremost concerns in choosing a great VPN, and if a service doesn’t have enough locations to be useful to you, all the security features won’t make a difference. But after those concerns have been satisfied, we recommend that most people use connections based on the OpenVPN protocol, because of security flaws and disadvantages in the PPTP and L2TP/IPsec protocols. (Experienced users may consider IKEv2, but because it has its own debated pros and cons, we ruled it out.) Though AES 128-bit encryption is fine for most purposes, we prefer services that default to the more-secure 256-bit encryption and still offer good performance.
But for a company that bills itself as "the world's fastest VPN," Hide.me was kind of mediocre, with our download speeds dropping to a third of the non-VPN baseline. Free users are limited to 2GB of monthly data and can connect to servers in only three countries; either of those limitations would be more acceptable if the network speeds were faster.
Cost: To pay for NordVPN on a monthly basis will cost you $11.95/month. However, you can get it cheaper at $9.00/month or $6.99/month if you buy 6 or 12 months at once for $54.00 or $83.88, respectively. Nord is also running a special that allows you to purchase 2 years of service for $3.99/month when you pay the full $95.75 upfront every two years. There's a 30-day money back guarantee and a free 3-day trial option.  
VyprVPN is one of very few providers to own and control its network infrastructure. Most VPN providers use 3rd-party companies to host their VPN servers, but not Vypr. This is a big draw for privacy concious users because their data is protected from end-to-end and never leaves VyprVPN's site. We strongly recommend avoiding its PPTP-only basic plan, but VyprVPN otherwise offers a great selection of features, such as a SmartDNS service, robust customer support and port selection. VyprVPNs “Chameleon” stealth technology is great for defeating censorship in places such such as China or Vietnam.

Windscribe  offers unlimited device connections. Yes you heard that right! The reason is that unlike the others above on this list, it doesn't offer unlimited data. So you're limited by bandwidth and data, not by devices. You get 10GB every month, and there's a free plan also but that only allows one device. There are apps for Windows, Mac and iOS but not Android, and the service also offers browser add-ons with useful features such as ad-blocking. Short range performance (to US sites) is good, but we noticed lag with transatlantic connections. However, if you’re looking to protect the data from a whole bunch of devices - an office, perhaps, or just a smart home - the support for unlimited connections is a real stand-out feature.

The service supports Windows, Mac, Android and iOS devices, but manual connection through Linux, BlackBerry, Boxee Box, HP WebOS or DD-WRT is also possible. It likewise allows users to use up to five devices using the account. PureVPN’s proprietary gigabit network ensures uptime and extremely fast speeds. It offers unlimited bandwidth, which is ideal for users who like video streaming or playing online games.
For the formal testing, we used an HP EliteBook X360 1020 G2 notebook, an Asus ZenPad S8 tablet (for Avira Phantom VPN) and a Samsung Galaxy Note 8 phone (for Speedify). Wi-Fi and Ethernet connections were provided by a 200-Mbps cable broadband line. Each time we connected to a VPN service, we recorded how long it took to get online and noted how many times the service disconnected us.

But for a company that bills itself as "the world's fastest VPN," Hide.me was kind of mediocre, with our download speeds dropping to a third of the non-VPN baseline. Free users are limited to 2GB of monthly data and can connect to servers in only three countries; either of those limitations would be more acceptable if the network speeds were faster.
We like that the company offers a connection kill switch feature and, for those who need it, there's an option to get a dedicated IP address. VyprVPN is a standout in their effort to provide privacy, and thwart censorship. When China began its program of deep packet VPN inspection, Golden Frog's VyperVPN service added scrambled OpenVPN packets to keep the traffic flowing. 

As we’ve mentioned, free doesn’t always mean ‘free’. Given the sensitive nature of your personal information, it’s tough to trust any company that are willing to waive a charge. The best free secure VPN will keep your information safe, without outrageous limitations to their speeds and features. Essentially, trust is the most important aspect, and you could end up being burned if you go with a dodgy provider.

The globetrotter. This person wants to watch the Olympics live as they happen, without dealing with their crummy local networks. They want to check out their favorite TV shows as they air instead of waiting for translations or re-broadcasts (or watch the versions aired in other countries,) listen to location-restricted streaming internet radio, or want to use a new web service or application that looks great but for some reason is limited to a specific country or region.
Some users will also want to research a VPN provider’s peer-to-peer (P2P) file-sharing policies. There are VPNs that block torrents. Others turn a blind eye to them, but will sell you out in a heartbeat should you be up to no good. P2P is not our main focus here, but we will note in each review whether a particular provider allows file sharing or not.
Google has launched Chrome on Google Daydream View and the Lenovo Mirage Solo with Daydream. If you have one of these headsets, you can launch Chrome directly from your homepage to browse and interact with any webpage while in VR. Chrome aims to be a universal browser on all types of devices and operating systems. This is also true for the new VR version. All the features you love on Chrome, from voice search to incognito mode to saved bookmarks, are now accessible on your Daydream headset.
Because few VPN companies offer live support, we appreciate when they at least provide easy-to-follow resources on their websites. Detailed setup guides with step-by-step instructions are available for every platform IVPN supports, and it breaks down troubleshooting advice into language that’s easy to understand. ExpressVPN also has clear, helpful support articles, but other services aren’t as straightforward. It’s harder to find the right information on TorGuard’s support site, and its articles aren’t as novice-friendly. If you need to submit a ticket for a specific problem, you can expect a quick response from all the companies we tested—IVPN and TorGuard both responded to us in minutes, and PIA took the longest at one day. ExpressVPN was the only one of our finalists that offered tech support over live chat. (Other companies provide live chat only for sales and signup support.)

CyberGhost is transparent about its company structure, posting photos and bios on its website of everyone from the CEO to the cleaning lady, and privacy fanatics will like that the company is based in Romania rather than the U.S. But CyberGhost's full-service subscription price is among the most expensive, unless you pay for two or three years up front.
Because the firewall does not have the encryption keys for each VPN connection, it can only filter on the plaintext headers of the tunneled data, meaning that all tunneled data passes through the firewall. However, this is not a security concern because the VPN connection requires an authentication process that prevents unauthorized access beyond the VPN server.

Since we all know the great benefits attached to VPN technology, it is also imperative to understand why our internet speed throttles when we connect to a VPN. A VPN is designed with consideration to protect our identity from hackers and allow us to access the geo-restricted content on the web. To do this, it adds highly encrypted protocols and other security mechanisms to make the technology efficient, and a right fit for netizens.


To be fair, not all pay VPN services are legitimate, either. It's important to be careful who you choose. Over on ZDNet's sister site, CNET, I've put together an always up-to-date directory of quality VPN providers. To be fair, some are better than others (and that's reflected in their ratings). But all are legitimate companies that provide quality service.
VPN technology was developed to allow remote users and branch offices to securely access corporate applications and other resources. To ensure security, data would travel through secure tunnels and VPN users would use authentication methods – including passwords, tokens and other unique identification methods – to gain access to the VPN. In addition, Internet users may secure their transactions with a VPN, to circumvent geo-restrictions and censorship, or to connect to proxy servers to protect personal identity and location to stay anonymous on the Internet. However, some Internet sites block access to known VPN technology to prevent the circumvention of their geo-restrictions, and many VPN providers have been developing strategies to get around these roadblocks.
As part of our research, we also make sure to find out where the company is based and under what legal framework it operates. Some countries don't have data-retention laws, making it easier to keep a promise of "We don't keep any logs." It's also useful to know under what circumstances a VPN company will hand over information to law enforcement and what information it would have to provide if that should happen.
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