Firewalls
A firewall is a program which monitors the incoming and outgoing traffic on your network, and blocks requests based on rules set during its configuration. Properly configured, a firewall can help protect against attempts to remotely access your computer, as well as control which applications can access which IPs.
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Provides simple and advanced ways to block access to the internet. Applications and addresses can individually be allowed or denied access to Wi-Fi and/or mobile connection.
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Notifies you when an app is trying to access the Internet, so all you need to do is just Allow or Deny. Allows you to create filter rules based on IP address, host name or domain name, and you can allow or deny only specific connections of an app.
Not Open Source -
AFWall+
(Android - Rooted)
xdaforums.com/t/5-0-root-3-6-0-afwall-iptables-firewall-28-aug-2023.1957231Android Firewall+ (AFWall+) is an advanced iptables editor (GUI) for rooted Android devices, which provides very fine-grained control over which Android apps are allowed to access the network.
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An open-source ad-blocker and firewall app for Android 6+ (does not require root).
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Firewall app for iPhone, allowing you to block any connection to any domain.
Not Open Source -
Tool to control Windows Filtering Platform (WFP), in order to configure detailed network activity on your PC. (Windows)
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Free, open source macOS firewall. It aims to block unknown outgoing connections, unless explicitly approved by the user.
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A very polished application firewall, allowing you to easily manage internet connections on a per-app basis. (Mac OS)
Not Open Source -
Makes internet connections from all apps visible, allowing you to block or manage traffic on a per-app basis. GNU/Linux port of the Little Snitch application firewall.
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Open source GUI firewall for Linux, allowing you to block internet access for certain applications. Supports both simple and advanced mode, GUI and CLI options, very easy to use, lightweight/ low-overhead, under active maintenance and backed by a strong community.
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The ufw (Uncomplicated Firewall) is a GUI application and CLI, that allows you to configure a firewall using
iptablesmuch more easily. -
IPFire is a hardened, versatile, state-of-the-art Open Source firewall based on Linux. Easy to install on a raspberry Pi, since it is lightweight and heavily customizable.
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An open source firewall tool for Linux that builds upon the Netfilter system built into the Linux kernel, making it easier to manage more complex configuration schemes with iptables.
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Enterprise firewall and router for protecting networks, built on the FreeBSD system.
Objective of this page
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Compare NetGuard vs NoRoot Firewall vs AFWall+ vs RethinkDNS & Firewall vs Lockdown vs SimpleWall vs LuLu vs Little Snitch vs OpenSnitch vs Gufw vs Uncomplicated Firewall vs IPFire vs Shorewall vs OPNSense vs
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Word of Warning
There are different types of firewalls, that are used in different circumstances. This does not omit the need to configure your operating systems defences. Follow these instructions to enable your firewall in Windows, Mac OS, Ubuntu and other Linux distros.
Even when properly configured, having a firewall enabled does not guarantee bad network traffic can not get through and especially during boot if you don't have root privileges.
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