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Das inoffizielle Android-Handbuch

Das inoffizielle Android-Handbuch
Buy at Amazon for €2.91

Die Daten, die ich rief: Wie wir unsere Freiheit an Großkonzerne verkaufen

Die Daten, die ich rief: Wie wir unsere Freiheit an Großkonzerne verkaufen
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Sie kennen dich! Sie haben dich! Sie steuern dich!: Die wahre Macht der Datensammler

Sie kennen dich! Sie haben dich! Sie steuern dich!: Die wahre Macht der Datensammler
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Sie wissen alles: Wie Big Data in unser Leben eindringt und warum wir um unsere Freiheit kämpfen müssen -

Sie wissen alles: Wie Big Data in unser Leben eindringt und warum wir um unsere Freiheit kämpfen müssen -
Buy at Amazon for €4.98

As of 2025-06-24 04:02
prices & availability might be subject to change.

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Firewalls & Co.

A firewall with trackers built-in is like a shelter with unlocked grenades built-in. Just saying.

Bluetooth Firewalls

2025-06-09

Bluetooth Firewall Trial (4.3@2,702) Ǥ 21 3 / Bluetooth Firewall (4.4@1,432; ~EUR 3.25) 8 1

Internet Firewalls

2025-06-09

If not specified otherwise, these apps require root.

NetGuard - no-root firewall (4.4@28,049) Ǥ 12 $Contains no trackers known to us \o/$ Github; Vorstellung 6/2020; Intro 8/2017; Anleitung 11/2017 | 9/2018 | 7/2019; Video Anleitung 3/2019: Testbericht 1/2020; can also block ads
Xproguard Firewall (4.4@72) Ǥ 4 1
Rethink: DNS + Firewall + VPN (4.3@2,318) 17 $Contains no trackers known to us \o/$ Github; Tipps zu Bedienung & Konfiguration
InternetGuard No Root Firewall (4.1@44,152) Ǥ 9 1 LastUpdate: 2023-08-28
NetPatch Firewall (4.1@1,053) Ǥ 4 $Contains no trackers known to us \o/$ LastUpdate: 2020-07-16 no root needed; 7-day trial (iAP for full version)
NoRoot Firewall (4@111,129) Ǥ 5 1 Anleitung 8/2016-1/2020; Video Intro 10/2018; no root required
LostNet NoRoot Firewall (4@3,931) 5 2 LastUpdate: 2014-07-06
AFWall+ (Android Firewall +) (3.8@9,714) 16 $Contains no trackers known to us \o/$ / AFWall+ (Donate) (4.4@694; ~EUR 10.00) 9 $Contains no trackers known to us \o/$ Github; Einführung & Tutorial 5/2014 (Vertiefung 9/2017) | 4/2019; Wiki; Official Support Page (XDA); Apps einfach über Orbot routen; Video Howto 4/2016; How-To 12/2020; open source continuation of DroidWall
Kronos Firewall (3.8@833) 1 $Contains no trackers known to us \o/$ LastUpdate: 2021-07-11
Mobiwol: NoRoot Firewall (3.6@11,236) 15 5 LastUpdate: 2018-04-24 no root required
NetProtector Firewall: No Root (3.2@164) Ǥ 5 2 fork of Netguard
Connection Tracker (2@285) 3 4 LastUpdate: 2015-06-21 Not really a firewall, but rather a connection tracker
NetWall-Mini Free | Network Security FireWall (1@239) 4 8 LastUpdate: 2019-05-29
Karma Firewall (0@0) 2 $Contains no trackers known to us \o/$ Github; utilizes Android's VPNService
LANShield (0@0) 9 control which apps are allowed to access your LAN

Various Firewall related tools

2025-06-09

Knock on Ports (4.7@458) Ǥ 8 $Contains no trackers known to us \o/$ Github
PortKnocker (4.5@103) 5 $Contains no trackers known to us \o/$ LastUpdate: 2015-04-29
Port Knocker (4.1@232) 3 $Contains no trackers known to us \o/$ LastUpdate: 2021-06-16
Fwd: port forwarder (3@579) Ǥ 6 11 LastUpdate: 2018-11-04 Github
Port Checker (2.5@44) Ǥ 4 2 LastUpdate: 2020-03-02
Port Knocker (0@0) 1 $Contains no trackers known to us \o/$ LastUpdate: 2020-12-29 Github

Further Readings:

Category Permissions
The 5 Best Firewall Apps to Secure Your Android Phone (1/2022)
Best Android Firewall apps no root access required (2/2019)
Best Firewall Apps for Android (8/2018)
In der Praxis: Firewalls für Android (8/2016 - 3/2021)
Mehr Datenkontrolle durch Firewall-App (4/2016 - 1/2020)

2025-06-19