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NetGuard/README.md

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# NetGuard
*NetGuard* provides simple and advanced ways to block access to the internet - no root required.
Applications and addresses can individually be allowed or denied access to your Wi-Fi and/or mobile connection.
Blocking access to the internet can help:
* reduce your data usage
* save your battery
* increase your privacy
NetGuard is the first free and open source no-root firewall for Android.
Features:
* Simple to use
* No root required
* 100% open source
* No calling home
* No tracking or analytics
* No advertisements
* Android 4.0 and later supported
* IPv4/IPv6 TCP/UDP supported
* Tethering supported
* Multiple device users supported
* Optionally allow when screen on
* Optionally block when roaming
* Optionally block system applications
* Optionally forward ports, also to external addresses
* Optionally notify when an application accesses the internet
* Optionally record network usage per application per address
* Material design theme with light and dark theme
PRO features:
* Log all outgoing traffic; search and filter access attempts; export PCAP files to analyze traffic
* Allow/block individual addresses per application
* New application notifications; configure NetGuard directly from the notification
* Display network speed graph in a status bar notification
* Select from five additional themes in both light and dark version
There is no other no-root firewall offering all these features.
Requirements:
* Android 4.0 or later
* A [compatible device](#compatibility)
Downloads:
* [GitHub](https://github.com/M66B/NetGuard/releases)
* [On Google Play](https://play.google.com/store/apps/details?id=eu.faircode.netguard) (stable)
* [On Google Play](https://play.google.com/apps/testing/eu.faircode.netguard) (beta)
* [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:
* Enable the firewall using the switch in the action bar
* Allow/deny Wi-Fi/mobile internet access using the icons along the right side of the application list
You can use the settings menu to change from blacklist mode (allow all in *Settings* but block unwanted applications in list) to whitelist mode (block all in *Settings* but allow favorite applications in list).
* Red/orange/yellow/amber = internet access denied
* Teal/blue/purple/grey = internet access allowd
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/01-main.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/02-main-details.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/03-main-access.png" width="320" height="569" />
<img src="https://raw.githubusercontent.com/M66B/NetGuard/master/screenshots/08-notifications.png" width="320" height="569" />
For more screenshots, see [here](https://github.com/M66B/NetGuard/tree/master/screenshots).
Compatibility
-------------
NetGuard will crash when the package *com.android.vpndialogs* has been removed or otherwise is unavailable.
<a name="FAQ"></a>
Frequently Asked Questions (FAQ)
--------------------------------
<a name="FAQ0"></a>
[**(0) How do I use NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ0)
<a name="FAQ1"></a>
[**(1) Can NetGuard completely protect my privacy?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ1)
<a name="FAQ2"></a>
[**(2) Can I use another VPN application while using NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ2)
<a name="FAQ3"></a>
[**(3) Can I use NetGuard on any Android version?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ3)
<a name="FAQ4"></a>
[**(4) Will NetGuard use extra battery power?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ4)
<a name="FAQ6"></a>
[**(6) Will NetGuard send my internet traffic to an external (VPN) server?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ6)
<a name="FAQ7"></a>
[**(7) Why are applications without internet permission shown?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ7)
<a name="FAQ8"></a>
[**(8) What do I need to enable for the Google Play™ store app to work?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ8)
<a name="FAQ9"></a>
[**(9) Why is the VPN service being restarted?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ9)
<a name="FAQ10"></a>
[**(10) Will you provide a Tasker plug-in?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ10)
<a name="FAQ13"></a>
[**(13) How can I remove the ongoing NetGuard entry in the notification screen?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ13)
<a name="FAQ14"></a>
[**(14) Why can't I select OK to approve the VPN connection request?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ14)
<a name="FAQ15"></a>
[**(15) Why won't you support the F-Droid builds?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ15)
<a name="FAQ16"></a>
[**(16) Why are some applications shown dimmed?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ16)
<a name="FAQ17"></a>
[**(17) Why is NetGuard using so much memory?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ17)
<a name="FAQ18"></a>
[**(18) Why can't I find NetGuard in the Google Play™ store app?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ18)
<a name="FAQ19"></a>
[**(19) Why does aplication XYZ still have internet access?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ19)
<a name="FAQ20"></a>
[**(20) Can I Greenify/hibernate NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ20)
<a name="FAQ21"></a>
[**(21) Does doze mode affect NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ21)
<a name="FAQ22"></a>
[**(22) Can I tether / use Wi-Fi calling while using NetGuard?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ22)
<a name="FAQ24"></a>
[**(24) Can you remove the notification from the status bar?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ24)
<a name="FAQ25"></a>
[**(25) Can you add a 'select all'?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ25)
<a name="FAQ27"></a>
[**(27) How do I read the blocked traffic log?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ27)
<a name="FAQ28"></a>
[**(28) Why is Google connectivity services allowed internet access by default?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ28)
<a name="FAQ29"></a>
[**(29) Why do I get 'The item you requested is not available for purchase'?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ29)
<a name="FAQ30"></a>
[**(30) Can I also run AFWall+ on the same device?**](https://github.com/M66B/NetGuard/blob/master/FAQ.md#FAQ30)
Permissions
-----------
* INTERNET: to forward allowed traffic to the internet
* ACCESS_NETWORK_STATE: to check if the device is connected to the internet through Wi-Fi
* READ_PHONE_STATE ('*make and manage phone calls*'): to detect mobile network changes, see [here](http://forum.xda-developers.com/showpost.php?p=64107371&postcount=489) for more details
* ACCESS_WIFI_STATE: to detect Wi-Fi network changes
* RECEIVE_BOOT_COMPLETED: to start the firewall when booting the device
* WAKE_LOCK: to reliably reload rules in the background on connectivity changes
* WRITE_EXTERNAL_STORAGE: to export settings on Android versions before 5.0 (Lollipop) (there is no need to grant this permission on later Android versions)
* com.android.vending.BILLING: to accept donations via in-app billing
Support
-------
* Questions: please [use this XDA-Developers forum thread](http://forum.xda-developers.com/showthread.php?t=3233012)
* Feature requests and bugs: please [create an issue on GitHub](https://github.com/M66B/NetGuard/issues/new)
Please do not use GitHub for questions.
Contributing
------------
Translations:
* Translations to other languages are welcomed
* You can translate online [here](https://crowdin.com/project/netguard/)
* If your language is not listed, please send a message to marcel(plus)netguard(at)faircode(dot)eu
* You can see the status of all translations [here](https://crowdin.com/project/netguard).
Please note that you agree to the license below by contributing, including the copyright.
Attribution
-----------
NetGuard uses:
* [Picasso](http://square.github.io/picasso/)
* [Android Support Library](https://developer.android.com/tools/support-library/index.html)
License
-------
[GNU General Public License version 3](http://www.gnu.org/licenses/gpl.txt)
Copyright (c) 2015-2016 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/).
*Android is a trademark of Google Inc. Google Play is a trademark of Google Inc*
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