At least once you have used a firewall on your PC to block or give access to the Internet of a specific program. But if you have never used a firewall or are not familiar with the term firewall, I will explain briefly what we are talking about and what a Android Firewall. A firewall is a system designed to block internet access and prevent unauthorized access from a private network. It is actually a passive component of perimeter defense of a computer network. Firewalls can be implemented either through hardware or software, or with a combination of both. For example, you can block a single program and prevent it from connecting to the internet.
Android NetGuard firewall to block internet access
The Android Firewall NetGuard a free solution for Android devices, which does not need root permissions to work. After installing it, NetGuard checks your applications that can access the Internet and decide whether or not to allow access to some of them. NetGuard offers separate control of the Wi-Fi network and cellular data network, making it useful to monitor apps that quickly consume the GB of our mobile data plan.
There are other useful methods to use a Firewall on Android and block Internet access to a specific application. But to perform features similar to this app, Android devices required access to root permissions. This application instead uses a different technique to get the firewall functionality. The application is based on an API introduced in Android Lollipop 5.0 that allows you to select Internet traffic. This means that advanced features like address filtering, traffic logging and on-demand configuration are not possible. Also, old Android versions are unfortunately not supported.
The application NetGuard the best Android firewall. This app that allows you to activate the Android Firewall works very well, and available for free on Google Play Store. There is also a paid Pro version that implements other features. This application is an open-source project, so you could also contribute suggestions to improve the project, of course if you are a programmer. To be updated with the latest version, you can follow this XDA thread. The application is updated frequently and new features are added in each version. Here are some basic features of the app.
- No root permission required
- Simple to use
- Open source
- No additional battery consumption
- No tracking
- No advertising
- Supports IPv4 / IPv6 TCP / UDP
- Blocks both system apps and apps downloaded from the Play Store
How the Android Firewall works NetGuard
The application does perfectly what it says, even if it is still in beta. The possibility of allowing the blocking of the app under a cellular network or WiFi network a useful function, to be had absolutely on its own devices, for total control over internet connections. For example, the Android Firewall allows you to block cellular data to applications that use large amounts of data, allowing access only to the Wifi network. In this way, for example, you will no longer have to worry about the GB of your internet promotion when you watch videos on YouTube, because you can only set it when you are on a WiFi network.
For example, you can use this application to block Internet access from Whatsapp or any other messaging app when you're not in the mood to talk to your friends, but still want to browse the web or watch a video on Youtube. But be careful, because by blocking Internet access to these applications, you may end up having no e-mail messages or losing an important message.
Try Netguard Firewall for Android on your device and block unwanted Internet access for certain applications. It allows you to save your cellular data and therefore your money.