Firewalls & Co.

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

Bluetooth Firewalls

2020-01-13

Bluetooth Firewall Trial (4.5@1,551) Ǥ 11 / Bluetooth Firewall (4.6@766; ~EUR 3.25) 6 Review 12/2013
LightningWall (4@125) 5 $Contains no known trackers \o/$ LastUpdate: 2017-07-27 Firewall; Tasker support; experimental Bluetooth included; deals with incoming and outgoing connections per interface

Internet Firewalls

2020-01-13

If not specified otherwise, these apps require root.

NoRoot Firewall (4.5@87,799) 4 / NoRoot Firewall Beta (4.1@2,707) 6 Testbericht 12/2013; Review 1/2014 | ?/2014; Intro 2/2014; Anleitung; Video Intro 10/2018; no root required
Savebit (4.5@50) 2 $Contains no known trackers \o/$ LastUpdate: 2016-04-09
NetGuard - no-root firewall (4.3@15,630) Ǥ 9 Github; Intro 10/2015; Vorstellung 11/2015 | 11/2015 | 12/2015; Anleitung 8/2016 | 11/2017; Video Anleitung 3/2019 can also block ads
InternetGuard Data Saver Firewall (4.3@5,961) Ǥ 10
Postern (4.3@5,592) 4 $Contains no known trackers \o/$
DroFireWall (Firewall for All) (4.2@709) 8 LastUpdate: 2017-03-26
CIA Firewall - Internet Security Noroot Firewall (4.2@446) Ǥ 9
Firewall Protect Guard (4.2@59) Ǥ 9 LastUpdate: 2017-08-24 no root needed
AFWall+ (Android Firewall +) (4.1@9,248) 8 / AFWall+ (Donate) (4.2@635; ~EUR 7.50) 8 Github; Vorstellung 2/2013; Intro 2/2013; 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@1,033) Ǥ 10 LastUpdate: 2017-08-06
Karma Firewall (4.1@433) 1 $Contains no known trackers \o/$
NetWall-Mini Free | Network Security FireWall (4.1@156) 4
Droid Firewall (4@464) Ǥ 6
LightningWall (4@125) 5 $Contains no known trackers \o/$ LastUpdate: 2017-07-27 Firewall; Tasker support; experimental Bluetooth included; deals with incoming and outgoing connections per interface
Protect Net: safe firewall for android no root (3.9@140) Ǥ 11
LostNet NoRoot Firewall (3.8@3,950) 5 LastUpdate: 2014-07-06
Connection Tracker (3.8@267) 4 LastUpdate: 2014-10-26 Not really a firewall, but rather a connection tracker
Mobiwol: NoRoot Firewall (3.7@10,744) Ǥ 17 LastUpdate: 2018-04-24 Test 1/2013; no root required
NetPatch Firewall (3.7@389) Ǥ 4 $Contains no known trackers \o/$ no root needed; 7-day trial (iAP for full version)
NetSaver Pro No Root-Firewall (2.9@17) Ǥ 8 LastUpdate: 2017-07-07

Firewalls & more

2020-01-13

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 Vorstellung 5/2013; incl. traffic-shaping & firewall

Various Firewall related tools

2020-01-14

Knock on Ports (4.7@69) 5 Github
Port Knocker (4.5@171) 3 $Contains no known trackers \o/$ LastUpdate: 2018-03-09
PortKnocker (4.5@100) 5 $Contains no known trackers \o/$ LastUpdate: 2011-05-25
Network Mapper (4.3@256; ~EUR 1.25) 7 $Contains no known trackers \o/$ LastUpdate: 2018-01-13
Common Port Checker (4.3@15) 1 LastUpdate: 2016-08-29
Knock the Port (3.8@50) 1 $Contains no known trackers \o/$
Fwd: port forwarder (3.1@304) Ǥ 6 Github
Port Checker (2.5@26) Ǥ 4

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)

2020-01-14

IzzyOnDroid

Firewalls & Co.

Bluetooth Firewalls

Internet Firewalls

Firewalls & more

Various Firewall related tools