Firewalls & Co.

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

Bluetooth Firewalls

2020-07-03

Bluetooth Firewall Trial (4.5@1,721) Ǥ 11 4 / Bluetooth Firewall (4.4@823; ~EUR 3.25) 6 $Contains no trackers known to us \o/$ Review 12/2013
LightningWall (4@125) 5 $Contains no trackers known to us \o/$ LastUpdate: 2017-07-27 Firewall; Tasker support; experimental Bluetooth included; deals with incoming and outgoing connections per interface

Internet Firewalls

2020-07-03

If not specified otherwise, these apps require root.

Savebit (4.5@50) 2 $Contains no trackers known to us \o/$ LastUpdate: 2016-04-09
NoRoot Firewall (4.3@93,139) 4 1 / NoRoot Firewall Beta (4.1@2,973) 6 1 Testbericht 12/2013; Review 1/2014 | ?/2014; Intro 2/2014; Anleitung; Video Intro 10/2018; no root required
NetGuard - no-root firewall (4.3@18,795) Ǥ 9 $Contains no trackers known to us \o/$ Github; Intro 10/2015; Vorstellung 11/2015 | 11/2015 | 12/2015; Anleitung 8/2016 | 11/2017; Video Anleitung 3/2019 can also block ads
NetWall-Mini Free | Network Security FireWall (4.3@204) 4 8
Postern (4.2@5,704) 4 $Contains no trackers known to us \o/$ LastUpdate: 2018-10-27
DroFireWall (Firewall for All) (4.2@709) 8 2 LastUpdate: 2017-03-26
Firewall Protect Guard (4.2@59) Ǥ 9 2 LastUpdate: 2017-08-24 no root needed
InternetGuard Data Saver Firewall (4.1@10,527) Ǥ 11 3
AFWall+ (Android Firewall +) (4.1@9,367) 9 $Contains no trackers known to us \o/$ / AFWall+ (Donate) (4.2@650; ~EUR 7.50) 8 $Contains no trackers known to us \o/$ Github; Einführung & Tutorial 5/2014 (Vertiefung 9/2017) | 4/2019; Wiki; Official Support Page (XDA); Apps einfach über Orbot routen; Video Howto 4/2016; open source continuation of DroidWall
VPN Safe Firewall - Free Proxy (4.1@1,101) Ǥ 10 5 LastUpdate: 2017-08-06
Karma Firewall (4.1@557) 2 $Contains no trackers known to us \o/$
NetPatch Firewall (4.1@536) Ǥ 4 $Contains no trackers known to us \o/$ no root needed; 7-day trial (iAP for full version)
Droid Firewall (4@483) Ǥ 6 3
LightningWall (4@125) 5 $Contains no trackers known to us \o/$ LastUpdate: 2017-07-27 Firewall; Tasker support; experimental Bluetooth included; deals with incoming and outgoing connections per interface
LostNet NoRoot Firewall (3.8@3,957) 5 2 LastUpdate: 2014-07-06
Mobiwol: NoRoot Firewall (3.7@10,959) Ǥ 17 4 LastUpdate: 2018-04-24 no root required
Connection Tracker (3.7@276) 4 4 LastUpdate: 2014-10-26 Not really a firewall, but rather a connection tracker
Protect Net: safe firewall for android no root (3.7@171) Ǥ 11 2
NetSaver Pro No Root-Firewall (2.9@17) Ǥ 8 1 LastUpdate: 2017-07-07

Firewalls & more

2020-07-03

Onavo Count | Data Usage (4.4@50) 12 LastUpdate: 2016-10-27 / Onavo Extend | Data Savings (4.2@23,655) 8 LastUpdate: 2015-06-15 incl. traffic-shaping & firewall

Various Firewall related tools

2020-07-03

Knock on Ports (4.7@113) 5 $Contains no trackers known to us \o/$ Github
PortKnocker (4.5@101) 5 $Contains no trackers known to us \o/$ LastUpdate: 2011-05-25
Port Knocker (4.4@195) 3 $Contains no trackers known to us \o/$ LastUpdate: 2018-03-09
Network Mapper (4.3@257; ~EUR 1.25) 7 $Contains no trackers known to us \o/$ LastUpdate: 2018-01-13
Common Port Checker (4.3@15) 1 1 LastUpdate: 2016-08-29
Knock the Port (3.7@55) 1 $Contains no trackers known to us \o/$ LastUpdate: 2018-10-31
Fwd: port forwarder (3@391) Ǥ 6 10 LastUpdate: 2018-11-04 Github
Port Checker (2.3@29) Ǥ 4 3

Further Readings:

Category Permissions
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 - 1/2020)
Mehr Datenkontrolle durch Firewall-App (4/2016 - 1/2020)

2020-07-06

IzzyOnDroid

Firewalls & Co.

Bluetooth Firewalls

Internet Firewalls

Firewalls & more

Various Firewall related tools