How Does VPN Split Tunneling Work?
Split tunneling is one of the handier features a VPN can offer, allowing you to use your VPN for things you want to keep secure while leaving the connection unprotected for less vital traffic. Lets take a look at how it works. How VPNs Work  To explain split tunneling, we first need to go over how a VPN works. Right now, youre reading this article on our site because your computer, through its browser, connected to your ISPs (internet service provider) server, which in turn requested the How-To Geek server for this article. Its not quite that simple, but for our purposes, it will work. Check out our article on how the internet works for the details. However, when you look at a site, the site also looks back: It can tell where youre connecting from, for example. This is because your ISP is telling it your IP address, which corresponds to a rough physical location. If you prefer that this information not be sent, you need to find a way to broadcast a fake IP address. There are several ways to do so, but one of the most secure is a virtual private network (VPN). When you use a VPN, instead of going directly from your ISPs server to the server of the site that you want, you first go through a server owned by the service. The VPN then connects to the site through whats called a secure tunnel. This effectively replaces your IP address with that of the VPNs server, making it look like youre in that location rather than your own. You can make it look like youre in the next town, the other side of the country, or a different continent altogether. Advertisement    This is great if you want to get past regional restrictions or circumvent censorship (like getting past Chinas Great Firewall). Besides rerouting your connection, a good VPN will also secure your connection, making it so that a third party, like your ISP, cant see what youre doing. Theyre a great way to add security to your browsing, although VPNs arent a bulletproof privacy solution. However, there is one major drawback to using a VPN: They decrease your connection speed. VPNs can slow down your connection for a few reasonsmost importantly, based on how far the VPN server is from you. For example, if youre in the United States, a Canadian server will be faster than one in Indiaall other things being equal. Although there are ways to speed up your VPN connection, youll always end up with some speed loss. Its just a question of how much slower youll be. This can be a problem if you need a lot of speed for one task, while you need the security of a VPN for another. One example is somebody who wants to watch a show outside of their Netflix region, but who is also uploading a backup of their hard drive. While you need a VPN to watch that show, the VPN is also slowing down your backup, probably even considerably. This is where split tunneling comes in. In effect, it turns your connection into two connections. One goes through the tunnel, while the other goes on as normalhence, split tunneling. The Netflix connection goes through the secure tunnel, which is slow, but also comes with the hidden IP, while your files are backed up through your regular internet connection at a good clip through broadcasting your location. Its a great solution for people who need the VPN for some things, but need speed for others. The most surprising thing about split tunneling is how few VPN services offer this handy feature. The list is pretty short, and if you exclude ones with limited functionality, the big ones left standing are NordVPN and ExpressVPN. Our favorite of these two is ExpressVPN, mainly because it makes setting up split tunneling so simple. Advertisement    All you need to do to set up ExpressVPNs split tunneling is to go to the options menu by using the three-line button in the top left of the app and selecting Options.  A new menu will appear. In the general tab, select manage connections on a per-app basis by clicking on the checkbox. Next, click on the settings button below the text. Here, you need to pick whether you want to exclude or include apps to the VPNs connection. If you exclude apps (In ExpressVPN, select Do not allow selected apps to use the VPN.), all apps will automatically use the VPNs except those you add to the list here. If you include apps (In ExpressVPN, select Only allow selected apps to use the VPN.), no apps will use the VPN except for the apps that you list here. Advertisement    For maximum security and privacy, the wiser choice is to exclude specific apps, like a backup client that regularly uploads a large amount of data, and to make sure that everything else goes through the VPN. Thats about it. Split tunneling is a simple feature to set up, but it can be a huge timesaver for some people. If youd like to mess with it yourself, check out ExpressVPN and its generous 30-day money-back guarantee for yourself.