As the size of the link state database increases, memory requirements and route computation times increase. To address this scaling problem, OSPF divides the network into areas (collections of contiguous networks) that are connected to each other through a backbone area. Each router only keeps a link state database for those areas that are connected to the router. Area border routers (ABRs) connect the backbone area to other areas.

Google Chrome has a built-in task manager to help users find out the runtime statistics of each tab. When you open up too many tabs and what to kill some of them to release more memory or CPU, task manager is a great tool. Let’s dive in. Open Task Manager You can access Task Manager by clicking on the three-dot icon on the right side of the address bar, going down to More Tools and then select Task Manager.
CyberGhost is one of the most feature-rich VPNs with special configurations for different use cases, including media streaming, downloads, anti-censorship and safe browsing. Ultimately designed to optimize your connection, this turned out to be quite irrelevant when looking at the download speed, which came out lowest across all testing tools, with an average speed of 2.47 Mb per second.
HotSpot Shield is a product that has had some ups and downs in terms of our editorial coverage. Back in 2016, they picked up some very positive coverage based on founder David Gorodyansky comments about protecting user privacy. Then, in 2017, a privacy group accused the company of spying on user traffic, an accusation the company flatly denies. Finally, just this year, ZDNet uncovered a flaw in the company's software that exposed users. Fortunately, that was fixed immediately.
Our top picks are proven to work with streaming apps and sites, reliably clock the fastest speeds and have the most useful set of privacy features. Their logging policies are the most transparent, fair and privacy-focused. Their apps are well-designed, quick to install and above all, easy to use. The best services also offer friendly customer support you can rely on to help you quickly should you get stuck.
Though TorGuard’s support site offers in-depth information, finding specific info is harder, and the site is not as easy to follow as those for our top pick or ExpressVPN. TorGuard provides helpful video tutorials, but they’re two years old now and don’t show the latest versions of the company’s apps. As with most of the VPNs we contacted, TorGuard support staff responded to our help ticket quickly—the response to our query came less than half an hour after we submitted it on a weekday afternoon. Still, if you’re worried about getting lost in VPN settings or don’t like hunting for your own answers, IVPN is a better fit.
Keeping the above mentioned factors for VPN speeds into account, we have compiled a list of fastest VPN services for 2018, and track records show that the list will remain valid well in to 2018. In addition to speed, we have also rated VPNs based on their exclusive offerings and packages, price, customer support and ease of configuration and VPN use.

To be sent on a local area network (LAN) or WAN link, the IP datagram is finally encapsulated with a header and trailer for the data-link layer technology of the outgoing physical interface. For example, when IP datagrams are sent on an Ethernet interface, the IP datagram is encapsulated with an Ethernet header and trailer. When IP datagrams are sent over a point-to-point WAN link, such as an analog phone line or ISDN, the IP datagram is encapsulated with a PPP header and trailer.
We believe privacy and security are fundamental human rights, so we also provide a free version of ProtonVPN to the public. Unlike other free VPNs, there are no catches. We don't serve ads or secretly sell your browsing history. ProtonVPN Free is subsidized by ProtonVPN paid users. If you would like to support online privacy, please consider upgrading to a paid plan for faster speeds and more features.

TorGuard was consistently one of the fastest services we tested. When we averaged three tests performed at different times of the week with Internet Health Test, TorGuard was the fastest service when connecting in the UK and Asia, the second fastest in the US, and the third fastest in Central Europe. OVPN was the next most consistent, but that company’s small network doesn’t have any servers in Asia, and it ranked fifth in the UK. Our top pick, IVPN, was the third most consistently fast after TorGuard and OVPN. However, we tested with each app’s default settings—since we expect most people won’t change them—and TorGuard’s default 128-bit encryption gives it an advantage in speed tests over VPNs that default to 256-bit encryption, as most services do. Still, we think 128-bit encryption is fine for most people who prioritize speed, and TorGuard’s consistency makes it a good value as our budget pick.


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.
The Overplay Smart DNS service, on the other hand, routes internet connection using a different DNS to give the illusion that one is located in a different country, without significant speed reduction. This is very useful to those who want to access sites that are blocked in their own countries. The service supports PCs, Apple TV, iPhone, iPad, Wii, PS3, XBOX360, among other devices.

The Shiva Password Authentication Protocol (SPAP) is a reversible encryption mechanism employed by Shiva Corporation. A computer running Windows XP Professional uses SPAP when connecting to a Shiva LAN Rover. A Shiva client that connects to a server running Routing and Remote Access also uses SPAP. Currently, this form of authentication is more secure than plaintext but less secure than CHAP or MS-CHAP.
ExpressVPN attempts to build trust in other ways, even without a public face. Court records from 2017 demonstrate that when Turkish authorities seized ExpressVPN servers in the country looking for information, they found nothing of value, as promised by ExpressVPN’s no-logging policy. ExpressVPN also highlights initiatives such as open-source leak-testing tools, developer content about how the company implements different technologies, and support for the efforts of OpenMedia and the EFF. The ExpressVPN representative even offered to arrange a confidential call between our writer and the owners of the company. However, without being able to discuss their identities or learn about other senior leadership, we believed that wouldn’t have been enough to change our recommendation, so we declined. In the end, trust is such a crucial part of deciding which VPN to use that we had to pass on ExpressVPN.
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.
Using a VPN is a little trickier for ChromeOS users, however. While Google has worked to make it easier to use a VPN with a Chromebook or Chromebox, it's not always a walk in the park. Our guide to how to set up a VPN on a Chromebook can make the task a bit easier, however. In these cases, you might find it easier to install a VPN plug-in for the Chrome browser. This will only secure some of your traffic, but it's better than nothing.

I read your post about fast vpns and everything makes sense, but which servers did you use? The distance between your location and the servers might be a significant aspect in determining the actual speeds. The distance the data packets have to travel can result in delayed response or increased ping times. If you place that as well in your post, it will be very helpful. As a reader, more info will available to make a solid choice. I have used various VPN services in the past, and have referred to your website for suggestion. The list seems appropriate but adding that suggested info can be really beneficial. Cheers!
This is important to understand. Consumer VPN services protect your transmission from your location to their location, not from your location all the way to the destination application you're using. If you think about it, this makes sense: A consumer VPN service is operated by a completely different company than, for example, Facebook or your bank.
Their best plan is 1-year subscription plan: $6.99 ($83.88). While their monthly price of $11.95 is at the high end of the spectrum (and they did lose a few points for that), their yearly price of $83.88 is lower than most our contenders. And yes, they also have a full 30-day refund policy. NordVPN also offers a dedicated IP option, for those looking for a different level of VPN connection. They do offer $3.99/month price ($95.75/2-year) .

iOS, once considered a strong, impregnable operating system, is becoming vulnerable to numerous cyber threats since last few years. Apple has recently confirmed that almost all of its products are affected by the Intel major bug; means any of your most sensitive information could potentially be read. The exact nature of the problem is still unclear, and so does the danger, there are some things we all can do.
When we ran our recent Hive Five on VPN service providers, we heard from VPN providers begging to be included, angry CEOs who claimed their company was maliciously left out, and others accusing some of the contenders of illegal or unethical behavior. We took at look at the poll and the claims, and while there’s no definitive proof the poll was gamed, we decided to come up with our own top five, based on our own research rather than reader feedback, that are great whether you’re the privacy advocate, the student, or the downloader.

How much should a VPN cost? Hotspot Shield can be as little as £119.99 for a lifetime or £5.99 a month if you'd rather sign up for a year. For your money you get a decent range of features including up to five devices, private browsing, virtual locations and good if not stellar performance: we did notice a slight increase in latency when Hotspot Shield was enabled, although it wasn’t too dramatic. There’s a seven-day trial that gives you more than enough time to put it through its paces.


Usually, it's the free services that throttle your usage in these ways. Some paid services will offer a trial, where you can transmit up to a certain data cap before being asked to sign up as a paying customer. That's actually pretty cool, because it gives you a chance to try out the performance of their service before paying, but it also gives the vendor a chance to make the money necessary to operate the service.

The sheer amount of VPN jargon can be overwhelming, even if you are pretty tech-savvy. Do look out for OpenVPN though, as this connection protocol offers the best overall blend of speed and security. Ignore talk of military or bank-grade encryption and just look for AES-256, as that’s the gold standard. Unless you know your DNS from your IPv6, a VPN killswitch is the main thing to look out for among security features as it will protect you from exposing your real IP address should your connection drop unexpectedly.
As we previously noted, we don't recommend relying on our picks to get around geographic restrictions on copyrighted content. The practice is likely illegal, and it violates the terms of service of your ISP, VPN, and content provider. On top of that, it often doesn't work—we couldn't access Netflix over any of the services we tried, and of the four streams we loaded on BBC iPlayer, only two worked a few days later.
This could be bad. I'm not terribly concerned if Comcast discovers my secret passion for muscle cars and I get more ads for car customizing kits. It might be annoying, but I'm not doing anything I really want to hide. Where the problem could occur is if ISPs start inserting their own ads in place of ads by, say, ZDNet. That could cut off the revenue that keeps websites alive, and that could have very serious repercussions.

Most people leave their privacy and security vulnerable in ways that are easier to fix with methods other than signing up for a VPN—methods that are potentially more effective. If you have a drafty house with paper-thin walls and halogen light bulbs, you'd get far more value out of every dollar by sealing cracks, insulating, and switching to LEDs than you would by putting solar panels on your roof. Similarly, before you rush to sign up for a VPN subscription, you should consider these other ways to up your privacy game.

ExpressVPN outranks quite a many VPN providers as it is well known for its overall remarkable performance. ExpressVPN speed is its unique selling proposition and it has one of the fastest VPN networks in the world. It comes handy both in delivering top speed and military-grade security. Having a wide range of servers located in 87 countries, ExpressVPN has this added advantage over its competitors. Although they don’t offer VPN free trial, their 30-day money back guarantee is superlative to all. It gives you enough time to use ExpressVPN for varied uses, hence to get satisfied with the performance. It also offers attractive features like the Zero-logging policy, unmetered bandwidth, multi logins, and unlimited switches that are considered as bliss for any VPN user. Below is the VPN speed test result for ExpressVPN, with and without a VPN connection. Read our complete ExpressVPN review here.


CyberGhost’s popular free tier might not offer amazing speeds, but its paid Pro tier is a real contender.  It proved to be both quick and consistent in our speed tests. An “extra speed” feature can be toggled before you connect for an extra boost. Setup and use are novice-friendly, and live chat with customer support is available if you need a hand. Military grade encryption ensures all your data is safely tunneled to the VPN server, and CyberGhost does not store any logs of user activity or other identifiers.

When security and speed go hand in hand, a definite argument will take place. It is to understand that everything has a price, and sometimes we need to adjust according to the conditions. When you connect to a VPN, you can’t expect a high-speed connection (more than your ISP), as it passes different encryption layers for security. First, we need to understand that the use of VPN varies, and so as the speed and security. If you are primary reason of using VPN is to get access to foreign websites like Netflix, HBO, BBC iPLayer, Hulu, and others, then VPN speed will be your main concern. While if you are a torrent lover, and you want to keep your identity anonymous from NSA and copyright authorities, then privacy and security are your top concern.
All that being said, some VPNs are still faster than others. During the process, we’ve tested over 45 VPN service providers to share our findings with you. Below you will find the top five fastest VPNs that offer feature-rich experience packed with the high speed. For sure, speed is one of the crucial things we look for before purchasing a VPN, especially when every other provider claims to be the fastest, so consider these providers who managed to cut our speed tests; you can thank us later!
The encryption and decryption processes depend on both the sender and the receiver having knowledge of a common encryption key. Intercepted packets sent along the VPN connection in the transit network are unintelligible to any computer that does not have the common encryption key. The length of the encryption key is an important security parameter. Computational techniques can be used to determine the encryption key. Such techniques require more computing power and computational time as the encryption key gets larger. Therefore, it is important to use the largest possible key size.
When we looked at just iPhone VPNs last year, our results yielded a very different breakdown. In our tests on iOS, we found that Hide My Ass, Golden Frog Vypr VPN, KeepSolid VPN Unlimited, NordVPN, and PureVPN were the top performers. Hide My Ass and PureVPN dominated in the download speed tests, improving speeds by 10.1 and 6.8 percent, respectively.
ExpressVPN sets the bar when it comes to download speed. It’s always near the top of the rankings, albeit never at the peak. Consistency is a defining factor of Express; volatility is rarely an issue that affects the outcome of test results. Connections drop a little more often than we’d like them to, but the company has done a remarkable job considering the size of the network it manages.
Of course, there are more than just phones and computers in a home. Game systems, tablets, and smart home devices such as light bulbs and fridges all need to connect to the internet. Many of these things can't run VPN software on their own, nor can they be configured to connect to a VPN through their individual settings. In these cases, you may be better off configuring your router to connect with the VPN of your choice. By adding VPN protection to your router, you secure the traffic of every gadget connected to that router. And the router—and everything protected by it—uses just one of your licenses. Nearly all of the companies we have reviewed offer software for most consumer routers and even routers with preinstalled VPN software, making it even easier to add this level of protection.
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