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[–] xeemee 0 points 1 point (+1|-0) ago  (edited ago)

android - these are the ones i know of - i have not yet used XPrivacy but it looks decent:

GitHub - ukanth/afwall: AFWall+ (Android Firewall +) - iptables based firewall for Android

AFWall+ is on F-Droid also

GitHub - M66B/XPrivacy: XPrivacy - The ultimate, yet easy to use, privacy manager

windows - there are none, zero, nada that are both good an open source that i am aware of, and i have looked far and wide for a very long time (years) - one of the better firewalls i have found is Private Firewall (free, no nags), but it does have some issues and hasn't been updated in a while - Comodo has become over-bloated garbage in my opinion

i'm running linux mint now with the default firewall - glad to have gotten rid of (fucking) window$ : )

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[–] JamesRussell ago 

Could someone eli5 external firewalls use? or what it is mainly used for?

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[–] G4 ago 

Stops malicious connections between your computer/network with an external one

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[–] chronicdiscord ago 

Unfortunately I cannot assist you with this, I just use an OpenBSD box.