The practical uses for a VPN service are plentiful. Want to access a website that your ISP has blocked? A VPN puts that website just one click away. Want to access the US version of Netflix from the UK? Just set your VPN to a US location and you're there. Want to access porn without your ISP or your business knowing about it? Want to download torrents without being blocked by your ISP? It's easy.
In 2011, a LulzSec hacker was arrested for his involvement with an attack on the Sony Pictures website. Cody Kretsinger used HideMyAss VPN to conceal his identity, but the company complied with a court order to hand over evidence that led to his arrest. This occurred in spite of the company’s pledge not to keep any logs of user activity. HMA says it does not log the contents of its users’ internet traffic, but it does keep detailed metadata logs that include users’ real IP addresses, which was enough to charge Kretsinger with a crime.
If you use Intrusion Detection System (IDS) technology, you should know that if the IDS machine is between the Internet and the VPN concentrator that decrypts the encrypted packets (e.g., on a demilitarized zone—DMZ—network), it won't be able to detect intrusion activity that occurs between VPN-connected machines. Most IDS sensors match packet payloads to a database of intrusion signatures so that they know when to flag something as suspicious. If the packets are encrypted, they'll look like gibberish to the IDS machine. If you want your IDS machine to be able to monitor network traffic from VPN connections, make sure you place the IDS machine behind the VPN concentrator so that the IDS machine checks the traffic after the VPN concentrator decrypts it. You can't use an IDS on a software VPN, which operates directly from one VPN host to another.
Increasingly, mobile professionals who need reliable connections are adopting mobile VPNs.[33][need quotation to verify] They are used for roaming seamlessly across networks and in and out of wireless coverage areas without losing application sessions or dropping the secure VPN session. A conventional VPN can not withstand such events because the network tunnel is disrupted, causing applications to disconnect, time out,[31] or fail, or even cause the computing device itself to crash.[33]

The VPN concept has been around for almost 10 years. Technologies that use public data lines for private corporate traffic promise companies a cornucopia of benefits—from saving money on expensive leased lines to a workforce empowered to access the entire wealth of corporate IT resources from any kind of connection anywhere on the globe. But as with other overhyped and overmarketed technologies, the devil is in the details.
If your VPN will primarily support remote users such as telecommuters and traveling employees and these users will access internal LAN resources that use a Network Address Translation (NAT) address rather than a routable IP address, you might have problems with some vendors' VPN products. NAT lets multiple internal network hosts use nonroutable IP addresses to access the Internet through one IP address on a firewall or router. This arrangement provides an additional level of security and lets a company be much more flexible with its address assignments than if it used real IP addresses for all its hosts.
With endpoints in 18 countries, Kaspersky Secure Connection can be set up so that it connects automatically, connects to an endpoint in a certain country by default, or seeks to establish a connection whenever you connect to an insecure Wi-Fi hotspot. You don’t, however get an automatic killswitch, so if your VPN connection goes south, you won’t be automatically disconnected.

Chosen as one of Mashable's top three for staying anonymous online, NordVPN is a choice backed by much of Reddit. It's made for fast streaming and torrenting, P2P and non P2P options, and is one VPN that can actually bypass the American Netflix block anywhere in the world. Plus, a single NordVPN login can be used on up to six devices simultaneously, so sharing the perks and splitting the price is a major bonus for savvier internet users. Reddit user ambillop writes:


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.
If your only streaming a movie from some apk here and there, does it even pay to use a vpn? Seems vpn’s log your real info, you may seem suspicious because if you use a vpn you could be hiding something, it’s really unclear that they protect your identity anyway when push comes to shove. Seems safer to just stream through the apk without a vpn in a lot of ways. Maybe better to just trust your major isp not to bother you then trust a 3rd party vpn.
For features, they offer multi-hop VPN cascades, advanced firewall configuration options (DNS and IP leak protection), port forwarding, NeuroRouting, Socks5 and Squid proxies, obfuscation features to defeat VPN blocking (Stealth VPN), and a customizable TrackStop feature to block tracking, malware, and advertising. Perfect Privacy is one of the few VPNs offering full IPv6 support (you get both an IPv4 and IPv6 address).
Central America isn’t the first place you’d think of when it comes to cutting edge technology, but NordVPN is up there with the best VPN services in 2019. It has 1015 servers in 59 countries, supports up to six devices simultaneously, runs 2048-bit encryption and has a feature list including an automatic kill switch, dedicated IP addresses, strong DNS leak protection and the ability to pay in Bitcoin. For relatively short connections performance was superb, although we did notice a little latency creeping in from time to time for very long distance connections. However, browsing remained snappy and performance wasn’t degraded significantly. We’d recommend hunting the site for its free trial and if you like it, signing up for the 3-year plan which is currently going for just $99!
My recommendation, and the protocol I most often choose to use, is OpenVPN. OpenVPN is a non-proprietary, open-source implementation of a VPN communication layer protocol. It's well-understood, well-regarded, generally quite secure, and robust. In addition, it has the benefit of being able to communicate over port 443, which is the standard port for https communication, which means almost all firewalls will allow OpenVPN traffic -- and most won't even be able to detect that a VPN is being used.
Testing criteria: Each VPN service in this guide was tested for IP address leaks, DNS leaks, connection issues, reliability, speed, and whether the features work correctly. Additionally, I also examined company policies, jurisdiction, logging practices, as well as the history of each VPN provider. The rankings of this list were based on a combination of all these factors.
NordVPN is a popular no logs VPN service based in Panama. It performed well in testing for the latest update to the NordVPN review and offers very competitive prices. While the speeds can be somewhat variable, the latest speed test results were good with the servers I tested. To improve speeds, NordVPN has added hundreds of servers to their network, so there is more available bandwidth for users.
To prevent middle-man access and to ensure that the data is sent via a secure tunnel, certain criteria should be met. The criteria include a DNS Leak Protection (over IPv4, IPv6 and WebRTC), encrypted traffic via a Private tunnel, and hopefully no logs of the data saved anywhere. However, if the government wants to see which websites and web locations a user visits, the ISP provider can demand and get that information. Thus, no real anonymity is achieved, but the specific data will be encrypted, secure and free from middle-man attacks.
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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