CHAP is an improvement over PAP because the clear-text password is not sent over the link. Instead, the password is used to create a hash from the original challenge. The server knows the client’s clear-text password and can, therefore, replicate the operation and compare the result to the password sent in the client’s response. CHAP protects against replay attacks by using an arbitrary challenge string for each authentication attempt. CHAP protects against remote-client impersonation by unpredictably sending repeated challenges to the remote client throughout the duration of the connection.
The RADIUS server receives a user-connection request from the VPN server and authenticates and authorizes the connection attempt. In addition to a yes or no response to an authentication request, RADIUS can inform the VPN server of other applicable connection parameters for this user such as maximum session time, static IP address assignment, and so on.
While a VPN can aid privacy and anonymity, I wouldn’t recommend fomenting the next great political revolution by relying solely on a VPN. Some security experts argue that a commercial VPN is better than a free proxy such as the TOR network for political activity, but a VPN is only part of the solution. To become an internet phantom (or as close as you can realistically get to one), it takes a lot more than a $7 monthly subscription to a VPN.

VyprVPN offers the fastest VPN servers to encrypt and secure your Internet connection while simultaneously delivering unparalleled speed and security, protecting your personal communications and data. With VyprVPN you can achieve top Internet speeds while streaming videos, shows or other content. Connect to any of our 70+ server locations worldwide while keeping your IP address, location and Internet traffic private, without sacrificing your speed.

To access your own home network, you want a VPN server running on either your home router or an attached device (like a Raspberry Pi or even an always-on desktop computer). Ideally, you’ll run the VPN server at the router level for best security and minimal power consumption. To that end, we recommend either flashing your router to DD-WRT (which supports both VPN server and client mode) or purchasing a router that has a built in VPN server (like the previously reviewed Netgear Nighthawk and Nighthawk X6 routers).
A firewall uses packet filtering to allow or disallow the flow of specific types of network traffic. IP packet filtering provides a way for administrators to define precisely what IP traffic is allowed to cross the firewall. IP packet filtering is important when private intranets are connected to public networks, such as the Internet. There are two approaches to using a firewall with a VPN server:

To verify that each service effectively hid our true IP address, we looked at a geolocation tool, DNS leaks, and IPv6 leaks. When connected to each service’s UK servers, we noted whether we could watch videos on BBC iPlayer, and using US servers we noted whether we could stream Netflix. We also visited the sites of Target, Yelp, Cloudflare, and Akamai to check whether our VPN IP addresses prevented us from accessing common sites that sometimes blacklist suspicious IP addresses.

In the most recent round of testing, we've also looked at how many virtual servers a given VPN company uses. A virtual server is just what it sounds like—a software-defined server running on server hardware that might have several virtual servers onboard. The thing about virtual servers is that they can be configured to appear as if they are in one country when they are actually being hosted somewhere else. That's an issue if you're especially concerned about where you web traffic is traveling. It's a bit worrisome to choose one location and discover you're actually connected somewhere else entirely.


Prices – ProtonVPN offers a free version with unlimited bandwidth. This makes it one of the few free VPN services with unlimited bandwidth. Its paid versions are categorized as Basic, Plus, and Visionary, each of which progressively offers more advanced features than the one before it. The basic version costs $4/month, while the Plus and Visionary plans cost $8/month and $24/month respectively. Yep, it is quite expensive.
Security is all too often considered a zero-sum game. You either make the effort to protect yourself and lose out on performance and shiny new toys, or you choose an easier life with the understanding that you may end up making ransomware payments for the rest of your life. At PCMag, we maintain that this mindset is outdated, especially in the world of virtual private networks, or VPNs. These services protect your data within an encrypted tunnel, keeping bad guys, ISPs, and snooping spies at bay. Using a VPN will certainly have an impact on your internet connection, but the good news is that it needn't be a big one.
There are a number of ways to use VPN. The most common scenario is when a remote user accesses a private network across the Internet using a remote access VPN connection. In another scenario, a remote office connects to the corporate network using either a persistent or an on-demand site-to-site VPN connection (also known as a router-to-router VPN connection).
Even if a company is at fault for deceptive marketing practices, it still has to comply with legal requests for whatever information it does have. Jerome told us, “In the U.S., however, there is a big difference between a request for data regularly stored for business purposes and a demand that a company retain information. VPN providers are not required to keep records just in case law enforcement might need them some day.” That means many companies could provide a list of their customers, but if they practice what they preach when it comes to no-logging policies, innocent customers looking for privacy shouldn’t get swept up in these requests.
FoxyProxy is an add-on to Firefox, Chrome or Internet explorer web browsers that facilitate and streamline proxies and VPN settings. As a complementary payment service, it makes available to the user several VPN servers located in different countries. The installation and configuration of this add-on is simple, and you simply have to be attentive to add the Proxy Server that we like the most, and that does not have to be from the US.
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.
TunnelBear is designed for a very specific group of people: people who want a VPN service but don’t want to mess around with configuration or become IT experts to make their connections more secure. And it caters brilliantly for that market, with a very straightforward interface and jargon-free writing. In truth, all of the VPN services these days do this but TunnelBear tries very hard to stand out. It’s not for power users - there isn’t much you can change - but with up to five simultaneous connections, servers across 20 countries and decent performance on US and Canadian websites.  Longer connections can be slower, though: it’s when the relatively small number of server locations makes itself obvious. There’s a free version that limits you to 500MB of monthly traffic, and if you pay annually the price of the full version drops from $9.99 to $4.99 per month.
This is also a good way to provide support for more than one family member on a single subscription. Generally, there's no good reason for a VPN provider to allow less than two or three connections. If your provider only allows one, find another vendor. We gave extra points in our VPN directory to those vendors who allowed three or more connections.
Prices – PIA offers monthly, yearly, and two-year subscription plans. The two-year plan is the cheapest at $2.91/month. PIA is a personal favorite VPN of mine that falls in the cheap category because it is easy to trust this VPN. It does not make any exaggerated claims: everything about the VPN is transparent. Its reliance on physical servers only (which are far more costly than virtual servers) also makes it an appealing choice with its low-priced subscription.

No company came closer to being a pick than ExpressVPN. It has a huge server network that performed well in our tests, plus easy-to-use applications on tons of platforms, and strong security technologies in place. A representative answered all our questions about company operations at length—except one. As noted in a PCWorld review of the service, ExpressVPN chooses not to disclose the company’s leadership or ownership. The company representative told us that this policy enabled ExpressVPN to build a private and secure product without compromise. “We think that this approach has been effective until now and that coupled with a stellar VPN product, we have succeeded in gaining a solid reputation in our industry. We are fortunate to be trusted by the many users worldwide who choose ExpressVPN.”


Yet Mullvad is worth a look because it's extremely private and secure. It asks nothing about you when you sign up. Instead, it assigns you a random number that will be your combined username and password. You don't have to provide an email address, and you can pay by mailing cash to the company's headquarters in Sweden. (Mullvad also takes credit cards, PayPal, bitcoin and wire transfers.)
Ivacy is a Singapore-based VPN service. It is on the lower end of the spectrum in terms of the speeds it offers. Nonetheless, it has strong security mechanisms such as DNS leak protection and AES 256 bit encryption. Its servers are located in more than 100 countries in the world. Find a comprehensive review about Ivacy VPN for pros and cons of the service.
Hello smith, to name a few fastest free VPN providers, Windscribe and Hide.me are the best in the business. Irrespective of what a free VPN can do to your online security, but there’s no denying that these two VPN providers have no impact on the speed of the internet. Windscribe gives you 11 different server, while Hide.me gives you 3 different servers for free.
Hello Jeff. I understand the trouble you’re having with torrents. It is a known issue with all VPN users, where the speed generally being compromised to a great level. To the best of my experience, the speed fluctuation has an impact from the location you are connected. So my first advice here is to try out switching to different servers and see which one has a better download and upload speed in your Torrent client. Also, do check the health of the torrent file – sometimes it is the issue from the tracker we are downloading. We have covered a detailed guide on how to download torrent safely which covers the speed area also.
In addition to logging concerns, an even bigger concern is the type of VPN protocol and encryption they use (as it’s much more probable a malicious third party will try and siphon up your traffic and analyze it later than they will reverse engineer your traffic in an attempt to locate you). Considering logging, protocol, and encryption standards is a great point to transition into the next section of our guide where we shift from questions focused on our needs to questions focused on capabilities of the VPN providers.
Most VPNs won’t keep any logs of user activity. Not only is this of benefit to their customers (and a great selling point) it’s also of huge benefit to them (as detailed logging can quickly consume disk after disk worth of resources). Many of the largest VPN providers will tell you as much: not only do they have no interest in keeping logs, but given the sheer size of their operation they can’t even begin to set aside the disk space to do so.
Logging Policy – The logging policy of any VPN provider is the first thing you should read before you decide to purchase it. This is especially true for users whose primary objective for purchasing a VPN is to maintain and protect their privacy. Many VPN providers deliberately write overly complicated and ambiguous privacy policies to confuse users. Stay far away from such VPN providers as these are most likely trying to hide their actual practices for how they treat their users’ privacy. 
There are many choices when it comes to VPN providers. There are some Virtual Private Network providers who offer free service and there are some which charge for VPN service. We have found that the paid VPN providers such as VyprVPN are preffered to the free service providers. Paid VPN providers offer robust gateways, proven security, free software, and unmatched speed. Compare VPN Providers using the data our friends over at VPN.com have compiled to find the right VPN for you.
Jurisdiction – ZenMate is based in Germany, which is a country with one of the freest Internet in Europe. Online freedom is protected in the country and it does not have a history of persecution against bloggers and social media activists. Nonetheless, it is still part of the 14 Eyes alliance, which implies that users should be careful when considering ZenMate.
If you're of the iPhone persuasion, there are a few other caveats to consider for a mobile VPN. Some iPhone VPN apps don't use OpenVPN, even if the VPN service that made the app supports the protocol. That's because Apple requires additional vetting if a company wants to include OpenVPN with its app. VPN app developers have slowly started jumping through those extra hoops and are bringing support for protocols such as OpenVPN to iOS.
However, you've got no choice but to run TunnelBear's client software (unless you use Linux), which may concern some privacy-minded users, and there's no option to set up TunnelBear connections on routers or other devices. Last but not least, this tiny Canadian firm is now owned by U.S. antivirus giant McAfee, which may mean TunnelBear is subject to U.S. search warrants.
All that being said, some VPNs are still all around faster than others. Below we’ve listed our top five fastest VPNs tested in the last year, out of a total of nearly two dozen premium providers. Speed tests we run factor largely into this list, but other non-quantifiable parameters based on our personal experience are also taken into consideration. These include how well they stream HD video and game online.
Individuals that access the internet from a computer, tablet or smartphone will benefit from using a VPN. A VPN service will always boost your security by encrypting and anonymizing all of your online activity. Therefore, both private and business users can benefit from using a VPN. Communications that happen between the VPN server and your device are encrypted, so a hacker or website spying on you wouldn't know which web pages you access. They also won't be able to see private information like passwords, usernames and bank or shopping details and so on. Anyone that wants to protect their privacy and security online should use a VPN.
Logging Policy – While conducting ExpressVPN review, the privacy policy is one of its strongest aspects. ExpressVPN does not log user data and takes measures to anonymize user-related information that does end in up the systems of the company for technical reasons. The company has clearly stated that they do not log any information that can possibly tell ExpressVPN the purpose for which an individual is using their VPN for. All in all, the logging policy is quite convincingly friendly towards the user.
Add to that the volume of add-ons offered by TorGuard, especially access to a 10Gbit network and static IP addresses which aren't likely to be blocked, and it's a very competitive service. It also has greatly expanded its collection of servers and because it is so focused on serving BitTorrent, it's clear that the company cares about how fast data moves through its network.

Adding security to a VPN connection inevitably results in a loss of speed. Using a stronger encryption algorithm, for example, means it takes longer to encrypt data travelling through the VPN and longer to decrypt it once it arrives at its destination. Similarly, more secure VPN protocols tend to be slower than less secure ones. PPTP, despite being the oldest protocol, is still significantly faster than OpenVPN or L2TP/IPSec. However, it also has known security vulnerabilities.


While it hides your IP address, a VPN is not a true anonymization service. For that, you'll want to access the Tor network, which will almost certainly slow down your connection. While a VPN tunnels your web traffic to a VPN server, Tor bounces around your traffic through several volunteer nodes making it much, much harder to track. Using Tor also grants access to hidden Dark Web sites, which a VPN simply cannot do. That said, some services, such as NordVPN, offer Tor access on specific servers. IVPN offers a similar feature called multi-hop VPN, which lets you route your web traffic in tricky ways.
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