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# NetGuard
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*NetGuard* provides a simple way to block access to the internet - no root required.
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Applications can individually be allowed or denied access to your Wi-Fi and/or mobile connection.
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Blocking access to the internet can help:
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* reduce your data usage
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* save your battery
* increase your privacy
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NetGuard is possibly the first free and open source no-root firewall for Android.
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Features:
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* No root required
* Simple to use
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* Free of charge
* Open source
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* No extra battery usage
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* No bandwidth reduction
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* No calling home
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* No tracking or analytics
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* No ads
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* No internet permission required
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* IPv4/IPv6 TCP/UDP supported
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* Optionally allow when screen on
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* Optionally block when roaming
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* Optionally block system applications
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* Material design
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Most of these features are the result of sending selected traffic to a sinkhole, instead of filtering all internet traffic.
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This means that advanced features, like address based filtering (needed for ad blocking), traffic logging, and on-demand configuration, are not possible.
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Routing selected traffic into a sinkhole relies on an API introduced in Android 5.0 (Lollipop),
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therefore older Android versions unfortunately cannot be supported.
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Since NetGuard has no internet permission, you know your internet traffic is not being sent anywhere.
Downloads:
* [GitHub ](https://github.com/M66B/NetGuard/releases )
* [Play store ](https://play.google.com/store/apps/details?id=eu.faircode.netguard ) (stable)
* [Play store ](https://play.google.com/apps/testing/eu.faircode.netguard ) (beta)
* [F-Droid ](https://f-droid.org/repository/browse/?fdfilter=netguard&fdid=eu.faircode.netguard ) (unsupported, often outdated)
* [XDA Labs App ](http://forum.xda-developers.com/android/apps-games/labs-t3241866 ) ([web page](https://labs.xda-developers.com/store/app/eu.faircode.netguard))
Usage:
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* Enable the firewall using the switch in the action bar
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* Allow/deny Wi-Fi/mobile internet access using the icons along the right side of the application list
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< img src = "screenshot1.png" width = "320" height = "569" / >
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< img src = "screenshot2.png" width = "320" height = "569" / >
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Compatibility
-------------
Devices / ROMs with a broken VPN implementation:
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* Alcatel™ OneTouch Idol 3 / Android 5.0.2 (reported in the Play store) (all traffic blocked)
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* Asus™ ZenFone 2 / Android 5.0.2/5.1.1, [reported on XDA ](http://forum.xda-developers.com/showpost.php?p=63619542&postcount=121 ) (all traffic blocked)
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* Asus™ ZenFone 4 / Android 5.0 (reported in the Play store) (all traffic blocked)
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* BQ™ Aquaris M5 / Android 5.0 (reported in the Play store) (all traffic blocked)
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* Lenovo™ Yoga Tablet Pro-1380L / 2 Pro / Android 5.0.1, [reported on XDA ](http://forum.xda-developers.com/showpost.php?p=63784102&postcount=278 ) (all traffic blocked)
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* Samsung™ Galaxy A5 / Android 5.0.2, [reported on Github ](https://github.com/M66B/NetGuard/issues/20 ) (all traffic blocked)
* Sony™ Xperia™ M4 Aqua Dual / Android 5.0 (reported in the Play store) (all traffic blocked)
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NetGuard will crash when the package *com.android.vpndialogs* has been removed or otherwise is unavailable.
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Tethering will not work when NetGuard is enabled due to a bug in Android ([issue](https://github.com/M66B/NetGuard/issues/42)).
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Unfortunately it is not possible to workaround any of these problems.
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< a name = "FAQ" > < / a >
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Frequently Asked Questions (FAQ)
--------------------------------
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< a name = "FAQ1" > < / a >
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[**(1) Can NetGuard completely protect my privacy?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ1 )
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< a name = "FAQ2" > < / a >
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[**(2) Can I use another VPN application while using NetGuard?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ2 )
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< a name = "FAQ3" > < / a >
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[**(3) Can I use NetGuard on any Android version?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ3 )
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< a name = "FAQ4" > < / a >
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[**(4) Will NetGuard use extra battery power?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ4 )
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< a name = "FAQ5" > < / a >
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[**(5) Can you add selective allowing/blocking applications/IP addresses?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ5 )
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< a name = "FAQ6" > < / a >
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[**(6) Will NetGuard send my internet traffic to an external (VPN) server?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ6 )
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< a name = "FAQ7" > < / a >
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[**(7) Why are applications without internet permission shown?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ7 )
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< a name = "FAQ8" > < / a >
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[**(8) What do I need to enable for the Google Play Store to work?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ8 )
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< a name = "FAQ9" > < / a >
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[**(9) Why is the VPN service being restarted?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ9 )
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< a name = "FAQ10" > < / a >
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[**(10) Will you provide a Tasker plug-in?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ10 )
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< a name = "FAQ12" > < / a >
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[**(12) Can you add on demand asking to block/allow access?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ12 )
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< a name = "FAQ13" > < / a >
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[**(13) How can I remove the ongoing NetGuard entry in the notification screen?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ13 )
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< a name = "FAQ14" > < / a >
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[**(14) Why can't I select OK to approve the VPN connection request?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ14 )
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< a name = "FAQ15" > < / a >
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[**(15) Why won't you support the F-Droid builds?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ15 )
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< a name = "FAQ16" > < / a >
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[**(16) Why are some applications shown dimmed?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ16 )
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< a name = "FAQ17" > < / a >
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[**(17) Why is NetGuard using so much memory?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ17 )
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< a name = "FAQ18" > < / a >
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[**(18) Why can't I find NetGuard in the Google Play Store?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ18 )
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< a name = "FAQ19" > < / a >
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[**(19) Why does aplication XYZ still have internet access?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ19 )
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< a name = "FAQ20" > < / a >
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[**(20) Can I Greenify/hibernate NetGuard?** ](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ20 )
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Permissions
-----------
* ACCESS_NETWORK_STATE: to check if the device is connected to the internet through Wi-Fi
* RECEIVE_BOOT_COMPLETED: to start the firewall when booting the device
* WAKE_LOCK: to reliably reload rules in the background on connectivity changes
* com.android.vending.BILLING: to accept donations via in-app billing
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Support
-------
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* Questions: please [use this XDA-Developers forum thread ](http://forum.xda-developers.com/showthread.php?t=3233012 )
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* Feature requests and bugs: please [create an issue on GitHub ](https://github.com/M66B/NetGuard/issues/new )
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Please do not use GitHub for questions.
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Contributing
------------
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Translations:
* Translations to other languages are welcomed
* Check if the language [is supported by Android ](http://stackoverflow.com/questions/7973023/what-is-the-list-of-supported-languages-locales-on-android ) and find its locale
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* Copy [this file ](https://github.com/M66B/NetGuard/blob/master/app/src/main/res/values/strings.xml ) to the [correct locale folder ](https://github.com/M66B/NetGuard/blob/master/app/src/main/res/ )
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* Translate the strings in the copied file and omit all lines with **translatable="false"**
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* Create a [pull request on GitHub ](https://help.github.com/articles/using-pull-requests ) for the new/updated translation
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* If you don't feel comfortable using GitHub, you can sent the translation to *marcel(plus)netguard(at)faircode.eu*
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Current translations:
1. Arabic (ar)
1. Dutch (nl)
1. Simplified Chinese (zh-rCN)
1. English
1. French (fr)
1. German (de)
1. Italian (it)
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1. Japanese (ja)
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1. Korean (ko)
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1. Polish (pl)
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1. Romanian (ro)
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1. Russian (ru)
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1. Slovak (sk)
1. Spanish (es)
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1. Ukrainian (uk)
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Please note that you agree to the license below by contributing, including the copyright.
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Attribution
-----------
NetGuard uses:
* [Picasso ](http://square.github.io/picasso/ )
* [Android Support Library ](https://developer.android.com/tools/support-library/index.html )
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License
-------
[GNU General Public License version 3 ](http://www.gnu.org/licenses/gpl.txt )
Copyright (c) 2015 Marcel Bokhorst ([M66B](http://forum.xda-developers.com/member.php?u=2799345))
All rights reserved
This file is part of NetGuard.
NetGuard is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your discretion) any later version.
NetGuard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with NetGuard. If not, see [http://www.gnu.org/licenses/ ](http://www.gnu.org/licenses/ ).
