What is a VPN? and what should avoid.
A VPN works just like the tunnel it connects different roads and turns them into one, and a helicopter can’t see what’s happening inside the tunnel.
What is a VPN ?
They usually tell you that a VPN is great, it lets you watch geo-blocked content, browse the internet securely. VPNs are great, sometimes. But using a VPN can be as dangerous as not using one if you don’t know what you’re doing.
A VPN is a virtual private network. It lets you remotely connect to a private network. For instance, your office might be using a VPN for remote employees. This way, you can establish a connection with your company’s intranet and use your computer as if it were in the office. You’re virtually in the office, using your company’s Wi-Fi network.
How Does a VPN Work?
When you connect your computer (or another device, such as a smartphone or tablet) to a VPN, the computer acts as if it’s on the same local network as the VPN. All your network traffic is sent over a secure connection to the VPN. Because your computer behaves as if it’s on the network, this allows you to securely access local network resources even when you’re on the other side of the world. You’ll also be able to use the Internet as if you were present at the VPN’s location.
When you browse the web while connected to a VPN, your computer contacts the website through the encrypted VPN connection. The VPN forwards the request for you and forwards the response from the website back through the secure connection. If you’re using an Australian-based VPN to access for example Netflix, Netflix will see your connection as coming from within the Australia .
Using a VPN is quite simple. Usually, a company or a developer installs a VPN server on a computer at home, in your office or in a data center. Then, users with the right credentials can connect to this server using a VPN client. There are many VPN clients out there on computers, mobile devices and even routers. Windows, Android, iOS and macOS even come with a basic VPN client in your device’s settings.
Other Example Uses for VPNs
VPNs are a fairly simple tool, but they can be used to do a wide variety of things:
- Access a Business Network While Traveling: VPNs are frequently used by business travelers to access their business’ network, including all its local network resources, while on the road. The local resources don’t have to be exposed directly to the Internet, which increases security.
- Access Your Home Network While Travelling: You can also set up your own VPN to access your own network while travelling. This will allow you to access a Windows Remote Desktop over the Internet, use local file shares, and play games over the Internet as if you were on the same LAN (local area network).
- 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 nearby, 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.
- Access Geo-Blocked Websites: Whether you’re an Australian trying to access your Netflix account while travelling out of the country or you wish you could use Australian media sites like Netflix, etc, you’ll be able to access these region-restricted services if you connect to a VPN located in the Australia.
- Bypass Internet Censorship: Many people use VPNs to get around and gain access to the entire Internet.
- Downloading Files: Yes, let’s be honest – many people use VPN connections to download files via BitTorrent. This can actually be useful even if you’re downloading completely legal torrents – if your ISP is throttling BitTorrent and making it extremely slow, you can use BitTorrent on a VPN to get faster speeds. The same is true for other types of traffic your ISP might interfere with (unless they interfere with VPN traffic itself.)
Should I use a VPN to be secure on the internet?
Many coffee shops or other services don’t spend too much time securing their Wi-Fi networks. Just like at home, it means that a user can see another user’s computer on the local network. And if there’s a hacker in your favorite coffee shop, they could snoop on your internet traffic to learn some information about you.
This was a serious issue a few years ago. Many websites didn’t use a secure connection on their login page. Hackers could get your bank account’s login and password and steal all your money.
Not using the Wi-Fi network at all was the best way to avoid that. But if you really needed to checked your email account, you could use a trustworthy VPN server to prevent snooping — nobody can see what’s happening in the tunnel.
Assume that all the free VPN apps that you see in the App Store and Google Play are free for a reason. They’ll analyze your browsing habits, sell them to advertisers, inject their own ads on non-secure pages or steal your identity. You should avoid free VPNs at all costs.
When it comes to paid options, some of them promise you internet privacy for $5, $10 or $20 per month. But look at the privacy policy and terms of service first. I’ve seen plenty of VPNs that log your internet traffic, share information with law enforcement and more. Read the small print.
And even if the privacy policy looks good, you’ll have to blindly trust them as it’s hard to verify that they actually do what they promise they’re doing.
The bottom line.
In many cases, a secure home connection with a MAC address whitelist is better than connecting to some random company’s VPN server. You don’t want to give a stranger your home keys even if they say that they promise they won’t break into your house.
As for encryption, some protocols aren’t as secure as you might think. L2TP with a pre-shared key for authentication can be decrypted for instance, destroying the concept of the unbreachable tunnel. A secure server running OpenVPN with a server certificate is more robust.
The bottom line is quite simple: a VPN is great and can fill different needs.
You can read more about security and internet on our blog .
